CVE-2026-18255

high

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.

References

Advisories
More

https://access.redhat.com/errata/RHSA-2026:81110

https://access.redhat.com/errata/RHSA-2026:74511

https://access.redhat.com/errata/RHSA-2026:70267

https://access.redhat.com/errata/RHSA-2026:69255

https://access.redhat.com/errata/RHSA-2026:66523

https://access.redhat.com/errata/RHSA-2026:66084

https://access.redhat.com/errata/RHSA-2026:65514

https://access.redhat.com/errata/RHSA-2026:63307

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-50411

https://bugzilla.redhat.com/show_bug.cgi?id=2508454

https://access.redhat.com/security/cve/CVE-2026-18255

Details

Source: Mitre, NVD

Published: 2026-07-29

Updated: 2026-10-24

Risk Information

CVSS v2

Base Score: 8.3

Vector: CVSS2#AV:N/AC:L/Au:M/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 7.2

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H