Advisory severityHigh7.2Red Hat Linux

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 3.15.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-18255 Source published Jul 29, 2026Source updated Jul 21, 2026

VulniPulse record published Jul 29, 2026Record updated Aug 11, 2026

CVE-2026-18255

Affected products & platforms

Red Hat LinuxUnclassified

Open source advisory

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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 3.15; Red Hat Quay 3. Red Hat fixing advisory: RHSA-2026:63307.

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 11 days ago·verify at source

Fixed versions

quay/quay-rhel8:1788191755
RHSA-2026:63307

Official advisory · high-confidence parse· fetched 11 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Remove users who can not be trusted with robot account credentials from GLOBAL_READONLY_SUPER_USERS.

Official advisory · high-confidence parse· fetched 11 days ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Red Hat Security Data APIofficial
Official vendor source used to discover this advisory; it remains the authority for affected products and remediation. Discovered from the machine-readable feed https://access.redhat.com/hydra/rest/securitydata/cve.json; this link opens the Red Hat Linux advisory index instead of the raw feed document.
Red Hat Linux
Official vendor advisoryofficial
Official advisory page fetched and parsed; accepted detail fields are attributed to this page.
Red Hat Linux
CVE.org CNA affected-product recordCVE.org
Structured CNA affected[] data independently confirmed the affected product scope; native advisory content remains authoritative.
CVE Program

Cross-references

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CVE-2026-18255NVD CVE.org MITRE

Discussion(0)

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