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.
References10
- access.redhat.com/errata/RHSA-2026:63307
- access.redhat.com/errata/RHSA-2026:65514
- access.redhat.com/errata/RHSA-2026:66084
- access.redhat.com/errata/RHSA-2026:66523
- access.redhat.com/errata/RHSA-2026:69255
- access.redhat.com/errata/RHSA-2026:70267
- access.redhat.com/errata/RHSA-2026:74511
- access.redhat.com/errata/RHSA-2026:81110
- access.redhat.com/security/cve/CVE-2026-18255
- bugzilla.redhat.com/show_bug.cgi?id=2508454
Metrics
- CVSS 3.1
-
7.2
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 1% percentile: 56 · as of 13 November 2026
- CWE
- CWE-863
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.