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fix(security): 公开表单不可再伪造服务端托管锚点(owner_id 等)(#3022) - #3036
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…aged anchors (#3022) The anonymous public-form surface (ADR-0056 Option A) is authorized by the declaration-derived publicFormGrant, which short-circuits the security middleware BEFORE every write gate (CRUD, FLS, the owner anchor guard, the tenant CHECK). The only field-side defense was the submit route's declared-field allow-list — and a FormView with zero declared section fields fell back to merging the raw body wholesale, so an unauthenticated visitor could POST owner_id=<victim> (or organization_id / audit columns / id) and attach the record to another user or tenant: the #3004 insert-forge with no credentials at all. Enforce the server-managed anchors on this surface at BOTH layers from one shared definition (PUBLIC_FORM_SERVER_MANAGED_FIELDS, new in @objectstack/spec/security): - plugin-security: the publicFormGrant branch strips the managed set from every row of a granted insert (batch included) before admitting the write — the data-layer boundary that holds no matter what any route lets through. - rest: the submit allow-list excludes the set unconditionally (an explicitly declared owner_id no longer passes; the zero-sections fallback keeps its all-fields behavior for business columns only), the resolve route drops the fields from rendered sections + the embedded schema, and the lookup route refuses a publicPicker declared on a managed anchor (would open anonymous sys_user search). Dunder body keys (__proto__/constructor/prototype) are skipped so a JSON-parsed own __proto__ key cannot smuggle inherited anchors past own-property checks. Proofs: publicFormGrant strip matrix in security-plugin.test.ts; route-level matrix in public-form-routes.test.ts; end-to-end forged-owner submit in showcase-public-form.dogfood.test.ts; authz-conformance ledger row public-form-managed-anchors pins the boundary as enforced. Closes#3022 Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Lr7QwD4Fx9KYkLH1xDMwEo
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📓 Docs Drift CheckThis PR changes 4 package(s): 102 hand-written doc(s) reference the affected code and may need an implementation-accuracy re-verification:
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…ace snapshot (#3022) The lint.yml api-surface gate flags any public-API change; the new export is the intentional addition from the #3022 fix, so regenerate and commit the snapshot per the gate's instruction. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Lr7QwD4Fx9KYkLH1xDMwEo
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Lr7QwD4Fx9KYkLH1xDMwEo
Integrates PR #3018 (owner_id anchor guard + bulk write scoping, #3004/#2982). Conflict: authz-conformance.matrix.ts — kept both sides' new ledger rows (ownership-anchor-guard, bulk-write-owner-scoping, public-form-managed-anchors). api-surface.json regenerated post-merge (check passes). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Lr7QwD4Fx9KYkLH1xDMwEo
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July 16, 2026 11:02
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背景
匿名公开表单(ADR-0056 Option A,
POST /forms/:slug/submit)由声明派生的publicFormGrant授权,而该 grant 在安全中间件最前段就return next()——CRUD/FLS/属主守卫(#3018 的 step 3.5)/租户 CHECK 全部不执行。字段侧唯一防线是路由的"已声明字段白名单",但表单声明零个 section 字段时会回退为Object.assign(filteredData, rawBody)原样合并。于是未认证访客可以POST owner_id=<victim>(以及organization_id/审计列/id)把记录挂到受害者名下或落到别的租户——正是 #3004 的 insert-forge,但无需任何凭证。修复
采纳 issue 的两个可选方案并同时落地(单一共享定义,双层执法,防止漂移):
共享定义(
@objectstack/spec/security新增PUBLIC_FORM_SERVER_MANAGED_FIELDS):id、owner_id、organization_id、tenant_id、created_at/created_by/updated_at/updated_by、is_deleted/deleted_at、__search。仅约束匿名公开表单面——已认证写路径语义不变(insert 播种 readonly、转移授权等仍按 #3018 规则)。plugin-security的publicFormGrant分支在放行 insert 前对每一行(含批量)剥离托管锚点,并 warn 记录。无论任何路由放过什么,伪造都到不了驱动;属主留空交由对象 hook / 首管理员 bootstrap 认领,与其它匿名种子行一致。owner_id不再放行;零声明 fallback 保留业务字段直通的既有约定但拒绝托管集。GET /forms/:slug的 schema 展开与渲染 sections 同步剔除(表单不再收集 submit 必拒的值);GET /forms/:slug/lookup/:field拒绝声明在托管锚点上的publicPicker(否则等于向互联网开放匿名 sys_user 搜索)。顺带关闭__proto__/constructor/prototype键的原型走私(JSON.parse 产生的自有__proto__键经obj[k]=v赋值会替换原型、让锚点以继承属性绕过 own-property 检查)。验证
plugin-security/security-plugin.test.ts新增 publicFormGrant 剥离矩阵(单条/批量/干净提交不受扰/非授权操作仍拒);rest/public-form-routes.test.ts新增路由级矩阵(声明白名单+托管排除、零声明 fallback、__proto__走私、schema/sections 一致性、lookup 拒绝、grant 上下文)。showcase-public-form.dogfood.test.ts新增伪造owner_id/organization_id/created_by的匿名提交用例(201 但锚点未落库)。public-form-managed-anchors行固定为 enforced。pnpm build71/71。content/docs/ui/public-data-collection.mdx补充托管锚点边界说明。关联
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https://claude.ai/code/session_01Lr7QwD4Fx9KYkLH1xDMwEo
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