CVE-2026-74240
published 2026-08-14CVE-2026-74240: A flaw was found in Red Hat Quay's JWT (JSON Web Token) validation for federated robot accounts and single sign-on (SSO) authentication. Multiple issues…
PriorityP336medium5.4CVSS 3.1
AVNACLPRLUINSUCLILAN
EPSS
0.29%
20.7th percentile
A flaw was found in Red Hat Quay's JWT (JSON Web Token) validation for federated robot accounts and single sign-on (SSO) authentication. Multiple issues related to audience verification and the enforcement of `azp` and `sub` claims were identified. These flaws could allow an attacker with a validly-signed token from the same identity provider to bypass configured security restrictions. This bypass could lead to unauthorized access by circumventing intended audience, subject, or authorized-client limitations.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| openshift-update-service | openshift-update-service-rhel8 | — | — |
| quay | quay-rhel8 | — | — |
| quay | quay-rhel9 | — | — |
| redhat | quay | — | — |
CVSS provenance
nvdv3.15.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
vendor_redhat5.4MEDIUM
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Red Hat
quay: JWT claim validation bypasses in Quay federated robot and SSO authentication
vendor_redhat·2026-08-14·CVSS 5.4
CVE-2026-74240 [MEDIUM] CWE-287 quay: JWT claim validation bypasses in Quay federated robot and SSO authentication
quay: JWT claim validation bypasses in Quay federated robot and SSO authentication
A flaw was found in Red Hat Quay's JWT (JSON Web Token) validation for federated robot accounts and single sign-on (SSO) authentication. Multiple issues related to audience verification and the enforcement of `azp` and `sub` claims were identified. These flaws could allow an attacker with a validly-signed token from the same identity provider to bypass configured security restrictions. This bypass could lead to unauthorized access by circumventing intended audience, subject, or authorized-client limitations.
Statement: This Moderate impact flaw in Red Hat Quay allows an attacker with a validly-signed token from the same identity provider to bypass configured audience, subject, or authorized-client restrict
GHSA
A flaw was found in Red Hat Quay's JWT (JSON Web Token) validation for federated robot accounts and single sign-on (SSO) authentication.
ghsa_unreviewed·2026-08-15
CVE-2026-74240 [MEDIUM] CWE-287 A flaw was found in Red Hat Quay's JWT (JSON Web Token) validation for federated robot accounts and single sign-on (SSO) authentication.
A flaw was found in Red Hat Quay's JWT (JSON Web Token) validation for federated robot accounts and single sign-on (SSO) authentication. Multiple issues related to audience verification and the enforcement of `azp` and `sub` claims were identified. These flaws could allow an attacker with a validly-signed token from the same identity provider to bypass configured security restrictions. This bypass could lead to unauthorized access by circumventing intended audience, subject, or authorized-client limitations.
VulDB
Red Hat OpenShift Update Service/Quay JWT Validation improper authorization
vuldb·2026-08-15·CVSS 5.4
CVE-2026-74240 [MEDIUM] Red Hat OpenShift Update Service/Quay JWT Validation improper authorization
A vulnerability described as critical has been identified in Red Hat OpenShift Update Service and Quay. Affected is an unknown function of the component JWT Validation. Executing a manipulation can lead to improper authorization.
This vulnerability is handled as CVE-2026-74240. The attack can be executed remotely. There is not any exploit available.
No detection rules found.
No public exploits indexed.
2026-08-14
Published