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Vulnerabilities CVE-2026-54356

CVE-2026-54356

High
Open
TLP:CLEAR

Budibase authenticated arbitrary S3 signed upload URL issuance via `/api/attachments/:datasourceId/url`

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Description

Budibase is an open-source low-code platform. Prior to 3.41.3, POST /api/attachments/:datasourceId/url in packages/server/src/api/routes/static.ts and packages/server/src/api/controllers/static/index.ts allows an authenticated published-app user with the BASIC role to supply attacker-controlled bucket and key values and obtain signedUrl and publicUrl values backed by stored S3 datasource credentials. This issue is fixed in version 3.41.3.

Details

CVSS Score
7.1
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
Confidence
90%
Published
Aug 17, 2026
Last Modified
Aug 17, 2026
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