What is CVE-2026-31949?

CVE-2026-31949 is a medium-severity vulnerability in Danny-avila Librechat, classified under CWE-248. CVSS score: 6.5/10. Published 2026-03-13.

How severe is CVE-2026-31949?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Danny-avila Librechat

CVE-2026-31949

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 sendi…

EPSS: 0.004 (30.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Danny-avila Librechat — versions < 0.8.3-rc1
Librechat

Weakness classification (CWE)

CWE-248

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2026-31949?: CVE-2026-31949 is a medium-severity vulnerability in Danny-avila Librechat, classified under CWE-248. CVSS score: 6.5/10. Published 2026-03-13.
How severe is CVE-2026-31949?: Medium severity. CVSS v3 base score is 6.5 out of 10.