What is CVE-2026-31944?

CVE-2026-31944 is a high-severity vulnerability in Danny-avila Librechat, classified under Missing Authentication for Critical Function. CVSS score: 7.6/10. Published 2026-03-13.

How severe is CVE-2026-31944?

High severity. CVSS v3 base score is 7.6 out of 10.

Auth bypass in Danny-avila Librechat

CVE-2026-31944

LibreChat is a ChatGPT clone with additional features. From 0.8.2 to 0.8.2-rc3, The MCP (Model Context Protocol) OAuth callback endpoint accepts the redirect from the identity provider and stores OAuth tokens for the user who initiated the…

Vulnerability class: Broken Authentication

EPSS: 0.000 (12.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N.

Affected products

Danny-avila Librechat — versions >= v0.8.2, <= 0.8.2-rc3

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

https://github.com/danny-avila/LibreChat/security/advisories/GHSA-vf7j-7mrx-hp7g (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-31944?: CVE-2026-31944 is a high-severity vulnerability in Danny-avila Librechat, classified under Missing Authentication for Critical Function. CVSS score: 7.6/10. Published 2026-03-13.
How severe is CVE-2026-31944?: High severity. CVSS v3 base score is 7.6 out of 10.