High severity · published Jul 29, 2026
CVE-2026-18255
Quay: quay: global read-only superuser can view robot account tokens
7.2
CVSS
0.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 55% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat Quay 3.10 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Quay 3.12 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Quay 3.14 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Quay 3.15 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Quay 3.16 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Quay 3.17 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Quay 3.18 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Quay 3.9 · Red Hat
All versions, or not specified · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-18255
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-18255
vendor-advisory
https://access.redhat.com/errata/RHSA-2026:63307
vendor-advisory
https://access.redhat.com/errata/RHSA-2026:65514
vendor-advisory
https://access.redhat.com/errata/RHSA-2026:66084
vendor-advisory
https://access.redhat.com/errata/RHSA-2026:66523
vendor-advisory
https://access.redhat.com/errata/RHSA-2026:69255
vendor-advisory
https://access.redhat.com/errata/RHSA-2026:70267
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