Skip to content

qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion #1368

Closed as not planned
Closed as not planned
qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion#1368
Labels
P3Nice to haves, rare edge casesbugSomething isn't workingready for workEnough information for someone to start working on

Description

@shawnlknight
shawnlknight
opened on Jan 7, 2026

Describe the bug
The package qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion: GHSA-6rw7-vpxm-498p.

To Reproduce
Run the following:

pnpm audit

Image

The issue is the version of supertest you are using. If you update supertest to the latest version (v7.2.2), it contains the updated version of superagent, which has the patched version of qs.

Expected behavior
Vulnerable package is updated to patched version and vulnerability no longer exists.

Metadata

Metadata

Assignees

No one assigned

    Labels

    P3Nice to haves, rare edge casesbugSomething isn't workingready for workEnough information for someone to start working on

    Type

    No type

    Projects

    No projects

      Milestone

      No milestone

      Relationships

      None yet

      Development

      No branches or pull requests

      Issue actions

      , 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
       blocks
(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion · Issue #1368 · modelcontextprotocol/typescript-sdk · GitHub
      Skip to content
      qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion #1368
      Closed as not planned
      Closed as not planned
      qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion#1368
      Labels
      P3Nice to haves, rare edge casesbugSomething isn't workingready for workEnough information for someone to start working on
      Description
      @shawnlknight
      shawnlknight
      opened on Jan 7, 2026
      Describe the bug
      
The package qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion: GHSA-6rw7-vpxm-498p.
      To Reproduce
      
Run the following:
      pnpm audit
      Image
      The issue is the version of supertest you are using. If you update supertest to the latest version (v7.2.2), it contains the updated version of superagent, which has the patched version of qs.
      Expected behavior
      
Vulnerable package is updated to patched version and vulnerability no longer exists.
      Metadata
      Metadata
      Assignees
      No one assigned
        Labels
        P3Nice to haves, rare edge casesbugSomething isn't workingready for workEnough information for someone to start working on
        Type
        No type
        Projects
        No projects
          Milestone
          No milestone
          Relationships
          None yet
          Development
          No branches or pull requests
          Issue actions
          
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
.markdown-body pre { background: #161b22 !important; }
.markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }
.markdown-body table th, .markdown-body table td { border-color: #30363d !important; }
.markdown-body img { background: #0d1117; }
.markdown-body blockquote { border-left-color: #8b949e; }
.markdown-body hr { border-color: #30363d; }
';
document.head.appendChild(style);
})();
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion · Issue #1368 · modelcontextprotocol/typescript-sdk · GitHub
          Skip to content
          qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion #1368
          Closed as not planned
          Closed as not planned
          qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion#1368
          Labels
          P3Nice to haves, rare edge casesbugSomething isn't workingready for workEnough information for someone to start working on
          Description
          @shawnlknight
          shawnlknight
          opened on Jan 7, 2026
          Describe the bug
          
The package qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion: GHSA-6rw7-vpxm-498p.
          To Reproduce
          
Run the following:
          pnpm audit
          Image
          The issue is the version of supertest you are using. If you update supertest to the latest version (v7.2.2), it contains the updated version of superagent, which has the patched version of qs.
          Expected behavior
          
Vulnerable package is updated to patched version and vulnerability no longer exists.
          Metadata
          Metadata
          Assignees
          No one assigned
            Labels
            P3Nice to haves, rare edge casesbugSomething isn't workingready for workEnough information for someone to start working on
            Type
            No type
            Projects
            No projects
              Milestone
              No milestone
              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion · Issue #1368 · modelcontextprotocol/typescript-sdk · GitHub
              Skip to content
              qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion #1368
              Closed as not planned
              Closed as not planned
              qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion#1368
              Labels
              P3Nice to haves, rare edge casesbugSomething isn't workingready for workEnough information for someone to start working on
              Description
              @shawnlknight
              shawnlknight
              opened on Jan 7, 2026
              Describe the bug
              
The package qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion: GHSA-6rw7-vpxm-498p.
              To Reproduce
              
Run the following:
              pnpm audit
              Image
              The issue is the version of supertest you are using. If you update supertest to the latest version (v7.2.2), it contains the updated version of superagent, which has the patched version of qs.
              Expected behavior
              
Vulnerable package is updated to patched version and vulnerability no longer exists.
              Metadata
              Metadata
              Assignees
              No one assigned
                Labels
                P3Nice to haves, rare edge casesbugSomething isn't workingready for workEnough information for someone to start working on
                Type
                No type
                Projects
                No projects
                  Milestone
                  No milestone
                  Relationships
                  None yet
                  Development
                  No branches or pull requests
                  Issue actions
                  
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion · Issue #1368 · modelcontextprotocol/typescript-sdk · GitHub
                  Skip to content
                  qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion #1368
                  Closed as not planned
                  Closed as not planned
                  qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion#1368
                  Labels
                  P3Nice to haves, rare edge casesbugSomething isn't workingready for workEnough information for someone to start working on
                  Description
                  @shawnlknight
                  shawnlknight
                  opened on Jan 7, 2026
                  Describe the bug
                  
The package qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion: GHSA-6rw7-vpxm-498p.
                  To Reproduce
                  
Run the following:
                  pnpm audit
                  Image
                  The issue is the version of supertest you are using. If you update supertest to the latest version (v7.2.2), it contains the updated version of superagent, which has the patched version of qs.
                  Expected behavior
                  
Vulnerable package is updated to patched version and vulnerability no longer exists.
                  Metadata
                  Metadata
                  Assignees
                  No one assigned
                    Labels
                    P3Nice to haves, rare edge casesbugSomething isn't workingready for workEnough information for someone to start working on
                    Type
                    No type
                    Projects
                    No projects
                      Milestone
                      No milestone
                      Relationships
                      None yet
                      Development
                      No branches or pull requests
                      Issue actions
                      
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion · Issue #1368 · modelcontextprotocol/typescript-sdk · GitHub
                      Skip to content
                      qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion #1368
                      Closed as not planned
                      Closed as not planned
                      qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion#1368
                      Labels
                      P3Nice to haves, rare edge casesbugSomething isn't workingready for workEnough information for someone to start working on
                      Description
                      @shawnlknight
                      shawnlknight
                      opened on Jan 7, 2026
                      Describe the bug
                      
The package qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion: GHSA-6rw7-vpxm-498p.
                      To Reproduce
                      
Run the following:
                      pnpm audit
                      Image
                      The issue is the version of supertest you are using. If you update supertest to the latest version (v7.2.2), it contains the updated version of superagent, which has the patched version of qs.
                      Expected behavior
                      
Vulnerable package is updated to patched version and vulnerability no longer exists.
                      Metadata
                      Metadata
                      Assignees
                      No one assigned
                        Labels
                        P3Nice to haves, rare edge casesbugSomething isn't workingready for workEnough information for someone to start working on
                        Type
                        No type
                        Projects
                        No projects
                          Milestone
                          No milestone
                          Relationships
                          None yet
                          Development
                          No branches or pull requests
                          Issue actions
                          
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion · Issue #1368 · modelcontextprotocol/typescript-sdk · GitHub
                          Skip to content
                          qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion #1368
                          Closed as not planned
                          Closed as not planned
                          qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion#1368
                          Labels
                          P3Nice to haves, rare edge casesbugSomething isn't workingready for workEnough information for someone to start working on
                          Description
                          @shawnlknight
                          shawnlknight
                          opened on Jan 7, 2026
                          Describe the bug
                          
The package qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion: GHSA-6rw7-vpxm-498p.
                          To Reproduce
                          
Run the following:
                          pnpm audit
                          Image
                          The issue is the version of supertest you are using. If you update supertest to the latest version (v7.2.2), it contains the updated version of superagent, which has the patched version of qs.
                          Expected behavior
                          
Vulnerable package is updated to patched version and vulnerability no longer exists.
                          Metadata
                          Metadata
                          Assignees
                          No one assigned
                            Labels
                            P3Nice to haves, rare edge casesbugSomething isn't workingready for workEnough information for someone to start working on
                            Type
                            No type
                            Projects
                            No projects
                              Milestone
                              No milestone
                              Relationships
                              None yet
                              Development
                              No branches or pull requests
                              Issue actions
                              
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion · Issue #1368 · modelcontextprotocol/typescript-sdk · GitHub
                              Skip to content
                              qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion #1368
                              Closed as not planned
                              Closed as not planned
                              qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion#1368
                              Labels
                              P3Nice to haves, rare edge casesbugSomething isn't workingready for workEnough information for someone to start working on
                              Description
                              @shawnlknight
                              shawnlknight
                              opened on Jan 7, 2026
                              Describe the bug
                              
The package qs's arrayLimit bypass in its bracket notation allows DoS via memory exhaustion: GHSA-6rw7-vpxm-498p.
                              To Reproduce
                              
Run the following:
                              pnpm audit
                              Image
                              The issue is the version of supertest you are using. If you update supertest to the latest version (v7.2.2), it contains the updated version of superagent, which has the patched version of qs.
                              Expected behavior
                              
Vulnerable package is updated to patched version and vulnerability no longer exists.
                              Metadata
                              Metadata
                              Assignees
                              No one assigned
                                Labels
                                P3Nice to haves, rare edge casesbugSomething isn't workingready for workEnough information for someone to start working on
                                Type
                                No type
                                Projects
                                No projects
                                  Milestone
                                  No milestone
                                  Relationships
                                  None yet
                                  Development
                                  No branches or pull requests
                                  Issue actions