Quick answers
- Is CVE-2026-87756 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-87756 being exploited in the wild.
- How severe is CVE-2026-87756?
- Informational severity, published 10 November 2026.
- Which products and versions are affected?
- Apache Geronimo before 10.3.0 and 11.0.0-M2.
- Is there a fix for CVE-2026-87756?
- Yes: fixed in 10.3.0, 11.0.0-M2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-87756 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-2026-87756?
- Check whether you run Apache Geronimo at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: 10.3.0, 11.0.0-M2
Technical details
The vulnerability is an authentication bypass in system Enterprise Java Beans (EJBs) used for remote deployment and configuration. An unauthenticated remote attacker with network access to the remote EJB endpoint can bypass administrative role checks when the server runs with the default profile, leading to arbitrary application deployment and code execution. A fix is available in versions 10.3.0 and 11.0.0-M2.
Affected products
- Apache Geronimo before 10.3.0 and 11.0.0-M2
Timeline
- 2026-11-10: disclosed
- 2026-11-10: advisory