Quick answers
- Is CVE-2026-97890 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-97890 being exploited in the wild.
- How severe is CVE-2026-97890?
- Informational severity, published 10 November 2026.
- Which products and versions are affected?
- OpenEJB.
- Is there a fix for CVE-2026-97890?
- No fixed version is recorded yet. Block network access to the embedded HTTP server from untrusted clients, or migrate to Tomcat-based TomEE distributions. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-97890 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-97890?
- Check whether you run OpenEJB. 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
Block network access to the embedded HTTP server from untrusted clients, or migrate to Tomcat-based TomEE distributions.
Technical details
The vulnerability is a session fixation flaw in the embedded HTTP server where old session identifiers remain valid after the application generates a new one during authentication. An attacker with network access can plant a session ID in a victim's browser before login; after the victim authenticates, the old session ID becomes associated with the authenticated session, enabling account hijacking. The advisory recommends blocking untrusted network access or migrating to Tomcat-based distributions.
Affected products
- OpenEJB
Timeline
- 2026-11-10: disclosed