CVE-2026-127100

CVSS 5.5 (medium) · published 2026-11-12

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.

Weakness: CWE-476

Source: NVD CVE-2026-127100

References

• https://access.redhat.com/security/cve/CVE-2026-127100
• https://bugzilla.redhat.com/show_bug.cgi?id=2572591

Check your software

Connect an AI agent to the FixLane MCP server or ask the Telegram bot to check what you have installed against incidents with a verified fixed version.