A flaw was found in the Conditional OTP authenticator of Keycloak, an identity and access management solution.

A flaw was found in the Conditional OTP authenticator of Keycloak, an identity and access management solution. The issue occurs when the system evaluates specific HTTP headers to determine if a one-time password (OTP) should be skipped, but fails to verify if those headers came from a trusted source. This could allow an attacker who already has a user's password to bypass the second-factor authentication by providing a specially crafted header in their request.

CVSS 3.1

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Severity from

no source yet

Weakness

CWE-287

• www.cve.org/CVERecord?id=CVE-2026-96445
• nvd.nist.gov/vuln/detail/CVE-2026-96445
• access.redhat.com/security/cve/CVE-2026-96445
• bugzilla.redhat.com/show_bug.cgi?id=2539280