CVE-2026-104032 Sssd: sssd: denial of service via unprivileged autofs cache invalidation
An unprivileged local user can cause a denial of service in SSSD by triggering excessive automount map updates due to missing authorization checks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-104032?
CVE-2026-104032 is a medium-severity missing authorization vulnerability in Redhat Enterprise Linux, published on 6 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A flaw was found in SSSD. An unprivileged local user can repeatedly request master automount map updates through the autofs responder due to missing authorization checks. This triggers global cache invalidation and forces repeated lookups to backend directory providers, leading to a Denial of Service (DoS) from degraded automount availability and elevated resource consumption.
Weakness: CWE-408
Which versions are affected by CVE-2026-104032?
It affects 3 products.
Products include Fedoraproject Sssd, Redhat Enterprise Linux, Redhat Openshift Container Platform.
How do I fix CVE-2026-104032?
No fix has been published for CVE-2026-104032 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-104032 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-104032 exists.
Other vulnerabilities in Redhat Enterprise Linux
Sources
Also known as DEBIAN-CVE-2026-104032, GHSA-9hff-39jv-57mx, UBUNTU-CVE-2026-104032.