CVSS 3.1
6.3 mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:NCVE-2026-34371
Medium (6.3) in librechat librechat. EPSS 0.3% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 17% of CVEs (scores of 2026-10-31)
- CWE
- CWE-22
- Published
- Modified
- Record from
- the NVD, synced
Affected
- librechat:librechat