High [CVE-2026-18255] Global read-only superuser can view robot account tokens
This high-severity Red Hat Linux advisory covers CVE-2026-18255 affecting Red Hat Quay 3.10, Red Hat Quay 3.12, Red Hat Quay 3.14.
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Summary
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.
Red Hat severity: Important — CVSS 7.2 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-863.
Affected Red Hat products: Red Hat Quay 3.10; Red Hat Quay 3.12; Red Hat Quay 3.14; Red Hat Quay 3.15; Red Hat Quay 3.16; Red Hat Quay 3.17; Red Hat Quay 3.9. Red Hat fixing advisory: RHSA-2026:66084, RHSA-2026:66523, RHSA-2026:70267, RHSA-2026:63307, RHSA-2026:69255, RHSA-2026:74511, RHSA-2026:65514.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.
Official advisory · high-confidence parse· fetched 1 month ago·verify at source
- quay/quay-rhel8:1788561841
- quay/quay-rhel8:1788594376
- quay/quay-rhel8:1788593843
- quay/quay-rhel8:1788191755
- quay/quay-rhel9:1789563753
- quay/quay-rhel9:1790690298
- quay/quay-rhel8:1788595574
- RHSA-2026:66084
- RHSA-2026:66523
- RHSA-2026:70267
- RHSA-2026:63307
- RHSA-2026:69255
- RHSA-2026:74511
- RHSA-2026:65514
Official advisory · high-confidence parse· fetched 1 month ago·verify at source
Mitigation checklist
- Remove users who can not be trusted with robot account credentials from GLOBAL_READONLY_SUPER_USERS.
Official advisory · high-confidence parse· fetched 1 month ago·verify at source
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