PT-2026-52492 · Danny Avila · Librechat
Published
2026-06-25
·
Updated
2026-06-25
·
CVE-2026-54027
CVSS v3.1
6.5
Medium
| Vector | AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the POST /api/files/images endpoint allows any authenticated user to upload files into any agent's tool resources (e.g., context, execute code) without verifying ownership or EDIT permission on the target agent. A permission check was added to the POST /api/files route in a previous patch, but the image upload route was never updated with the same check. An attacker can simply use the image endpoint instead of the file endpoint to bypass the authorization entirely. This vulnerability is fixed in 0.8.4-rc1.
Fix
Missing Authorization
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Weakness Enumeration
Related Identifiers
Affected Products
Librechat