Hi,

The following vulnerability was published for sssd.

CVE-2026-90462[0]:
| A flaw was found in SSSD. When configured with the LDAP access
| provider and `ldap_access_order` including `ppolicy` or `lockout`, a
| fail-open condition in the LDAP ppolicy access check can occur if a
| user lookup returns zero results. This can incorrectly return
| success and cache an allow decision, permitting continued
| authorization for a deleted or deprovisioned user. A remote attacker
| with prior valid account context could exploit this to maintain
| access to information and potentially make limited modifications to
| resources that should no longer be available.

So far there is only the Red Hat reference, but upstream might already
have handled it. I have not corss checked upstream issues yet or
applied upstream commits.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-90462
https://www.cve.org/CVERecord?id=CVE-2026-90462
[1] https://bugzilla.redhat.com/show_bug.cgi?id=2479483

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore