CVE-2026-127100
MEDIUM
NVD
CVSS Score
5.5
Severity
MEDIUM
Published
Nov 12, 2026
Vendor
unknown
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.