CVE-2026-31949
mediumpriority · track · 0EPSS 0.005 · 40 %ileEURUUSEPSS · scored 2026-10-22
LibreChat is a ChatGPT clone with additional features. Prior to 0.8.3-rc1, a Denial of Service (DoS) vulnerability exists in the DELETE /api/convos endpoint that allows an authenticated attacker to crash the Node.js server process by sending malformed requests. The DELETE /api/convos route handler attempts to destructure req.body.arg without validating that it exists. The server crashes due to an unhandled TypeError that bypasses Express error handling middleware and triggers process.exit(1). This vulnerability is fixed in 0.8.3-rc1.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
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affected products (3)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
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references (4)
External citations — patches, advisories, analysis.
- https://github.com/danny-avila/LibreChat/security/advisories/GHSA-5m32-chq6-232pcnnvd
- https://www.librechat.ai/Patchcnnvd
- https://github.com/danny-avila/LibreChat/security/advisories/GHSA-5m32-chq6-232penisa_euvd
- https://github.com/danny-avila/LibreChat/security/advisories/GHSA-5m32-chq6-232pExploitMitigationVendor Advisorynvd
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