CVE-2026-18255 Quay: quay: global read-only superuser can view robot account tokens
A global read-only superuser can view robot account tokens for unauthorized repositories, enabling impersonation of robot accounts.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-18255?
CVE-2026-18255 is a high-severity missing authorization vulnerability in Red Hat Quay 3.10, published on 29 Jul 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A flaw was found in Quay. A user configured in GLOBAL_READONLY_SUPER_USERS is able to view robot account tokens for repositories they are not a member of, allowing an attacker with read-only superuser privileges to impersonate any robot account.
Weakness: CWE-863
Which versions are affected by CVE-2026-18255?
How do I fix CVE-2026-18255?
No fix has been published for CVE-2026-18255 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-2026-18255 being exploited?
There is no known exploitation of CVE-2026-18255 in the wild and no public exploit code.
Sources
Also known as GHSA-x8x8-qp2x-c2mj.