CVE-2026-96445 Keycloak-services: keycloak-services: conditional otp skip-header policy evaluated against untrusted proxy headers
Attackers with valid passwords can bypass two-factor authentication by spoofing untrusted proxy headers in Keycloak's conditional OTP policy.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-96445?
CVE-2026-96445 is a medium-severity authentication bypass vulnerability in Red Hat Build of Keycloak, published on 23 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-287
Which versions are affected by CVE-2026-96445?
How do I fix CVE-2026-96445?
No fix has been published for CVE-2026-96445 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-96445 being exploited?
There is no known exploitation of CVE-2026-96445 in the wild and no public exploit code.
Sources
Also known as GHSA-jj9w-64w4-2wcx.