CVE-2026-18255Quay: quay: global read-only superuser can view robot account tokens
- 7.2HighCVSS base score
- 0.77%Exploitation in 30 daysEPSS · top 44% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By redhat
Published
- 3 months later
· 3 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.1 | High7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Awaiting Analysis | 3.1 | High7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.77% · top 44% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.2.
Affected products
- unaffected 1788561841 – < *
- unaffected 1788594376 – < *
- unaffected 1788593843 – < *
- unaffected 1788191755 – < *
- unaffected 1789563753 – < *
- unaffected 1790690298 – < *
- unaffected 1791265590 – < *
- unaffected 1788595574 – < *
What to do
Workaround: Remove users who can not be trusted with robot account credentials from GLOBAL_READONLY_SUPER_USERS.
References
References10
- RHSA-2026:63307 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:65514 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:66084 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:66523 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:69255 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:70267 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:74511 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:81110 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-18255 (opens in a new tab)vdb-entryx_refsource_REDHAT
- RHBZ#2508454 (opens in a new tab)issue-trackingx_refsource_REDHAT
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-50411 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-18255)Record last updated .