CVE-2026-15563 Wildfly-iiop-openjdk: missing authentication on eap's iiop nameservice leads to mitm or dos
Attackers can hijack JNDI lookups via unauthenticated IIOP NameService bind operations, enabling man-in-the-middle attacks or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-15563?
CVE-2026-15563 is a high-severity missing authorization vulnerability in Red Hat RHEL-8 based Middleware Containers, 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 EAP's IIOP. The listener's NameService would accept bind operations without authentication, allowing an attacker to hijack JNDI lookups and binding them to a malicious ORB, achieving MITM or DoS on further invocations.
Weakness: CWE-306
Which versions are affected by CVE-2026-15563?
How do I fix CVE-2026-15563?
Apply the vendor's patch.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-15563 being exploited?
There is no known exploitation of CVE-2026-15563 in the wild and no public exploit code.
Sources
Also known as GHSA-259j-555g-mwrr.