Vulnerability 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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Librechat | Librechat | < 0.8.4 |
Related Weaknesses (CWE)
References
- https://github.com/danny-avila/LibreChat/security/advisories/GHSA-qrm5-r67f-6692ExploitVendor Advisory
- https://github.com/danny-avila/LibreChat/security/advisories/GHSA-qrm5-r67f-6692ExploitVendor Advisory
FAQ
What is CVE-2026-34371?
CVE-2026-34371 is a vulnerability with a CVSS score of 6.3 (MEDIUM). 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 usi...
How severe is CVE-2026-34371?
CVE-2026-34371 has been rated MEDIUM with a CVSS base score of 6.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-34371?
Check the references section above for vendor advisories and patch information. Affected products include: Librechat Librechat.