CVE-2026-93907 IBM WebSphere Application Server is affected by a bypass authentication vulnerability
Remote attackers can bypass authentication in IBM WebSphere Application Server via a flaw in the CSIv2 inbound propagation handler.
- 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-2026-93907?
CVE-2026-93907 is a high-severity authentication bypass vulnerability in IBM WebSphere Application Server, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
IBM WebSphere Application Server 8.5, and 9.0 could allow a remote attacker to bypass authentication by exploiting a flaw in the CSIv2 inbound propagation handler.
Weakness: CWE-287
Which versions are affected by CVE-2026-93907?
How do I fix CVE-2026-93907?
No fix has been published for CVE-2026-93907 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-2026-93907 being exploited?
There is no known exploitation of CVE-2026-93907 in the wild and no public exploit code.
Sources
Also known as GHSA-wrqm-vfgr-mwmm.