CVE-2026-123710
Quay: red hat quay: unauthenticated registry signing-key takeover via service key rotation
A flaw was found in Red Hat Quay. An unauthenticated client can obtain an anonymous registry token with an audience it controls, present that token to the service key rotation endpoint, and install its own approved signing key with no expiry. Registry tokens signed with that key are accepted for any repository, allowing read and write access to private images and replacement of repository tags.
Fixes and workarounds
Workaround
Restrict access to the /keys endpoint at the proxy or load balancer so only trusted internal components can reach it. Review audit logs for service_key_rotate and service_key_delete events with a null expiration_date, and remove any unrecognised approved service keys. Deleting a rogue key is not durable until a fixed build is deployed, because the anonymous request can install a new key.
Source: CNA: redhatAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| Red Hat Quay 3 Red Hat quay/quay-rhel8
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
| Red Hat Quay 3 Red Hat quay/quay-rhel9
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
| Red Hat Quay 5 Red Hat quay/quay-rhel9
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 9.8 critical |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | CNA: redhat |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://access.redhat.com/security/cve/CVE-2026-123710CNA: redhat · vdb-entry, x_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2568072CNA: redhat · issue-tracking, x_refsource_REDHAT
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