CVE-2026-15571
CVE CVE-2026-15571EUVD EUVD-2026-61238Published 2026-08-18T20:40:17.000ZLast changed 2026-08-20T14:07:09.000ZCVSS 7.3
What the advisory describes
A flaw was found in the legacy client-initiated account-linking endpoint of Keycloak, a widely used open-source identity and access management solution. The mechanism used to protect the account-linking process from unauthorized requests relies on a hash that can be predicted by a malicious OIDC client. By tricking a user into authenticating, an attacker-controlled client can forge a valid linking URL to connect the victim's account to an attacker's external identity. This results in a full account takeover, allowing the attacker to log in as the victim.
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 26.6 patch: 26.6-12; patch: 26.6.6-1
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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