Description
LibreChat is a ChatGPT clone with additional features. Prior to 0.8.4, LibreChat trusts the name field returned by the execute_code sandbox when persisting code-generated artifacts. On deployments using the default local file strategy, a malicious artifact filename containing traversal sequences (for example, ../../../../../app/client/dist/poc.txt) is concatenated into the server-side destination path and written with fs.writeFileSync() without sanitization. This gives any user who can trigger execute_code an arbitrary file write primitive as the LibreChat server user. This vulnerability is fixed in 0.8.4.
CVSS Metrics
- Vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N
- Attack Vector
- network
- Complexity
- high
- Privileges
- low
- User Action
- none
- Scope
- changed
- Confidentiality
- none
- Integrity
- high
- Availability
- none
- Weaknesses
- CWE-22
Metadata
- Primary Vendor
- LIBRECHAT
- Published
- 4/7/2026
- Last Modified
- 4/14/2026
- Source
- NIST NVD
- Note: Verify all details with official vendor sources before applying patches.
Affected Products
librechat : librechat
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