Medium [CVE-2026-105447] Quay: quay: global read-only superuser can access build trigger write credentials
This medium-severity Red Hat Linux advisory covers CVE-2026-105447 affecting Red Hat Quay 3.
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Summary
A flaw was found in Quay. When handling build trigger requests, the application incorrectly exposes trigger configuration details containing repository write tokens to global read-only administrative users.
An authenticated user with read-only privileges can exploit this flaw by querying the build trigger API to retrieve these delegate tokens. This issue allows a restricted user to bypass read-only limitations and push arbitrary container images to private repositories, leading to privilege escalation.
This vulnerability is rated Moderate for Red Hat Quay because exploitation requires existing high-privilege authentication as an administrative user assigned to the global read-only superuser role.
While the flaw allows such users to obtain build trigger webhook tokens with repository write permissions and upload container images to private repositories, it cannot be leveraged by unauthenticated users or standard repository members.
Consequently, the blast radius is confined to environments where global read-only administrative access has been delegated to untrusted accounts. Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N).
Weakness: CWE-863. Affected Red Hat products: Red Hat Quay 3.
Red Hat does not currently list a fixing RHSA for this CVE.
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 5 hours ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 5 hours ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Official advisory · high-confidence parse· fetched 5 hours ago·verify at source
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