CVE-2026-22734 Cloud Foundry UAA SAML 2.0 Signature Bypass
Attackers can bypass SAML signature validation to obtain tokens for any user and access protected systems when SAML bearer assertions are enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-22734?
CVE-2026-22734 is a high-severity authentication bypass vulnerability in Cloud Foundry UUA, published on 16 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Cloud Foundry UUA is vulnerable to a bypass that allows an attacker to obtain a token for any user and gain access to UAA-protected systems. This vulnerability exists when SAML 2.0 bearer assertions are enabled for a client, as the UAA accepts SAML 2.0 bearer assertions that are neither signed nor encrypted. This issue affects UUA from v77.30.0 to v78.7.0 (inclusive) and it affects CF Deployment from v48.7.0 to v54.14.0 (inclusive).
Weakness: CWE-290
Which versions are affected by CVE-2026-22734?
How do I fix CVE-2026-22734?
No fix has been published for CVE-2026-22734 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-2026-22734 being exploited?
There is no known exploitation of CVE-2026-22734 in the wild and no public exploit code.
Sources
Also known as GHSA-vp68-f85j-5gw3.