What is GHSA-mmj3-g9q3-fq2j?

GHSA-mmj3-g9q3-fq2j is a security advisory published by GitHub Security Advisories with Medium severity. A flaw was found in SSSD's PAM responder on builds with the JSON PAM extension enabled. A local...

Which CVE IDs does GHSA-mmj3-g9q3-fq2j cover?

GHSA-mmj3-g9q3-fq2j covers the following CVE IDs: CVE-2026-127100. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-mmj3-g9q3-fq2j?

GHSA-mmj3-g9q3-fq2j has a CVSS v3 base score of 5.5, published by GitHub Security Advisories.

GHSA-mmj3-g9q3-fq2jMediumCVSS 5.5

A flaw was found in SSSD's PAM responder on builds with the JSON PAM extension enabled. A local...

Vendor

GitHub Security Advisories

Published

November 12, 2026

Last Modified

November 12, 2026

🔗 CVE IDs covered (1)

CVE-2026-127100 →

📋 Description

A flaw was found in SSSD's PAM responder on builds with the JSON PAM extension enabled. A local attacker can submit a crafted authentication request containing a non-string OAuth2 code value. Missing JSON type validation leads to a NULL pointer dereference, terminating the PAM responder and disrupting SSSD-backed authentication.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-127100
https://access.redhat.com/security/cve/CVE-2026-127100
https://bugzilla.redhat.com/show_bug.cgi?id=2572591
https://github.com/advisories/GHSA-mmj3-g9q3-fq2j