CVE-2026-31949: medium-severity vulnerability in danny-avila LibreChat
LibreChat Denial of Service (DoS) via Unhandled Exception in DELETE /api/convos
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 0.4%
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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products
danny-avila · LibreChatRelated CVEs — danny-avila LibreChat
In the same product, most dangerous first.
CVE-2025-69222CRITICALLibreChat is vulnerable to Server-Side Request Forgery due to missing restrictionsEPSS 4.6%CVE-2026-22252CRITICALLibreChat MCP Stdio Remote Command ExecutionEPSS 4.2%CVE-2026-32625CRITICALLibreChat Exfiltrates Server Secrets via MCP Server URL InjectionEPSS 2.8%CVE-2025-54868HIGHLibreChat exposes arbitrary chats through Meilisearch engineEPSS 0.5%CVE-2026-54037MEDIUMLibreChat: Incomplete Fix for CVE-2025-7105 — /api/convos/duplicate Lacks Rate Limiting Applied to /api/convos/forkEPSS 0.5%CVE-2026-54024MEDIUMLibreChat: Incomplete Fix for CVE-2024-11171 — Conversation Import Multer Instance Missing File Size LimitsEPSS 0.4%