CVE-2026-15567 Wildfly: wildfly-iiop: wildfly-jacorb: wildfly: pre-auth denial of service on the iiop listener
A remote unauthenticated attacker can cause a denial of service in WildFly by triggering an OutOfMemoryError via the IIOP listener.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-15567?
CVE-2026-15567 is a high-severity denial of service vulnerability in Red Hat Fuse 7, published on 11 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw was found in Wildfly. A remote unauthenticated attacker can trigger OutOfMemoryError as CSIv2Util's GSS token decoder reads an attacker-controlled length field without bounds checking and attempts to allocate a byte array of that size.
Weakness: CWE-789
Which versions are affected by CVE-2026-15567?
How do I fix CVE-2026-15567?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-15567 being exploited?
There is no known exploitation of CVE-2026-15567 in the wild and no public exploit code.
Sources
Also known as GHSA-h33j-vrhg-4q7j.