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fix(files): default file name#3585

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Merged
icecrasher321 merged 1 commit into from
Mar 14, 2026
Merged

fix(files): default file name #3585

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5 changes: 1 addition & 4 deletions apps/sim/app/api/files/upload/route.ts
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Original file line numberDiff line numberDiff line change
Expand Up@@ -74,10 +74,7 @@ export async function POST(request: NextRequest) {
const uploadResults = []

for (const file of files) {
const originalName = file.name
if (!originalName) {
throw new InvalidRequestError('File name is missing')
}

@cursorcursorBotMar 14, 2026

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Default filename 'untitled' always fails extension validation

High Severity

The default filename 'untitled' has no file extension, so validateFileExtension('untitled') will always return false — it splits on '.', gets 'untitled' as the "extension", and that's not in ALLOWED_EXTENSIONS. This means when a file has no name (the exact scenario this PR is fixing), the upload is rejected with a confusing error: "File type 'untitled' is not allowed" instead of proceeding with the default name. The previous behavior at least gave a clear "File name is missing" error. The workspace files route doesn't have this problem since it has no extension check.

Fix in CursorFix in Web

const originalName = file.name || 'untitled'

if (!validateFileExtension(originalName)) {
const extension = originalName.split('.').pop()?.toLowerCase() || 'unknown'
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5 changes: 1 addition & 4 deletions apps/sim/app/api/workspaces/[id]/files/route.ts
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Original file line numberDiff line numberDiff line change
Expand Up@@ -93,10 +93,7 @@ export async function POST(request: NextRequest, { params }: { params: Promise<{
return NextResponse.json({ error: 'No file provided' }, { status: 400 })
}

const fileName = rawFile.name
if (!fileName) {
return NextResponse.json({ error: 'File name is missing' }, { status: 400 })
}
const fileName = rawFile.name || 'untitled'

const maxSize = 100 * 1024 * 1024
if (rawFile.size > maxSize) {
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