CVE-2026-97846
CVE CVE-2026-97846EUVD EUVD-2026-86530Published 2026-09-25T06:16:38.000ZLast changed 2026-09-25T13:53:07.000ZCVSS 6.8
What the advisory describes
Keycloak provides a feature called mTLS holder-of-key binding which ensures that a token can only be used by the client that originally requested it by binding it to their digital certificate. A flaw was discovered where the new Standard Token Exchange V2 feature does not check for this certificate. This allows an attacker with stolen client credentials to obtain a standard, unrestricted token that bypasses these security protections.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Red Hat — Red Hat Build of Keycloak
- Red Hat — Red Hat Single Sign-On 7
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Red Hat — Red Hat build of Keycloak
Does this concern one of your customers?
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