CVE-2026-15887 IBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5.31 are affected by multiple vulnerabilities
Attackers can exploit blind server-side request forgery in SOAP processing to access internal resources or bypass security controls.
- 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-2026-15887?
CVE-2026-15887 is a medium-severity server-side request forgery vulnerability in IBM WebSphere Application Server, published on 14 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
IBM WebSphere Application Server 9.0, and 8.5 is affected by blind server-side request forgery when processing SOAP requests.
Weakness: CWE-918
Which versions are affected by CVE-2026-15887?
How do I fix CVE-2026-15887?
No fix has been published for CVE-2026-15887 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-15887 being exploited?
There is no known exploitation of CVE-2026-15887 in the wild and no public exploit code.
Sources
Also known as GHSA-x739-2h8w-3q46.