CVE-2026-75886 Missing authorization in Red Hat OpenShift Container Platform 4
Unauthenticated attackers can access internal catalog services and leak index data due to missing authentication in the console's reverse proxy handler.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-75886?
CVE-2026-75886 is a high-severity missing authorization vulnerability in Red Hat OpenShift Container Platform 4, published on 23 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw was found in openshift/console. An unauthenticated remote attacker can exploit a misconfiguration in the CatalogdHandler, which lacks proper authentication, and the forwarding of the `openshift-session-token` cookie. This allows the attacker to send requests to the in-cluster catalogd service, leading to the disclosure of the internal operator-catalog index and providing a relay into the openshift-catalogd namespace.
Weakness: CWE-441
Which versions are affected by CVE-2026-75886?
How do I fix CVE-2026-75886?
No fix has been published for CVE-2026-75886 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-2026-75886 being exploited?
There is no known exploitation of CVE-2026-75886 in the wild and no public exploit code.
Sources
Also known as GHSA-f8rq-4f8p-cmww.