CVE-2026-15571 | BDVDB-2026-360761 Detail

Description#

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.

Impact#

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Exploit#

History#

1. Version 12026-08-18Record published in the CVE List.
2. Version 22026-08-20Most recent update recorded in the CVE List.