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.
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Fixes

Solution

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Workaround

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History

Tue, 17 Mar 2026 12:30:00 +0000

Type Values Removed Values Added
First Time appeared Librechat
Librechat librechat
CPEs cpe:2.3:a:librechat:librechat:*:*:*:*:*:*:*:*
Vendors & Products Librechat
Librechat librechat

Mon, 16 Mar 2026 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 16 Mar 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Danny-avila
Danny-avila libre Chat
Vendors & Products Danny-avila
Danny-avila libre Chat

Fri, 13 Mar 2026 20:00:00 +0000

Type Values Removed Values Added
Description 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.
Title LibreChat Denial of Service (DoS) via Unhandled Exception in DELETE /api/convos
Weaknesses CWE-248
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-16T13:43:45.488Z

Reserved: 2026-03-10T15:10:10.657Z

Link: CVE-2026-31949

cve-icon Vulnrichment

Updated: 2026-03-16T13:43:31.752Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-13T19:54:39.753

Modified: 2026-03-17T12:26:45.177

Link: CVE-2026-31949

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-16T09:24:09Z

Weaknesses