CVE-2026-16189 IBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5.31 are affected by multiple vulnerabilities
Remote attackers can inject forged entries into the administrative log of IBM WebSphere Application Server, compromising log integrity.
- 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-2026-16189?
CVE-2026-16189 is a medium-severity vulnerability in IBM WebSphere Application Server, published on 14 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
IBM WebSphere Application Server 9.0, and 8.5 could allow a remote attacker to inject forged log entries into the server's administrative log.
Weakness: CWE-117
Which versions are affected by CVE-2026-16189?
How do I fix CVE-2026-16189?
No fix has been published for CVE-2026-16189 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-16189 being exploited?
There is no known exploitation of CVE-2026-16189 in the wild and no public exploit code.
Sources
Also known as GHSA-w42g-8v89-j7g6.