CVE-2026-51773 Server-side request forgery in n/a
An authenticated attacker can trigger Server-Side Request Forgery in OpenStack glance_store to access external servers and leak sensitive authentication headers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-51773?
CVE-2026-51773 is a high-severity server-side request forgery vulnerability in n/a, published on 25 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An issue in the VMware datastore driver of OpenStack glance_store. When an authenticated attacker provides a maliciously crafted image location URI pointing to an external server, the _retry_request function fails to validate the destination host before attaching sensitive authentication headers.
Weakness: CWE-918
Which versions are affected by CVE-2026-51773?
How do I fix CVE-2026-51773?
Apply the vendor's patch.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-51773 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-51773 exists.
Sources
Also known as DEBIAN-CVE-2026-51773, GHSA-p93m-62q2-q66v, UBUNTU-CVE-2026-51773.