Quick answers
- Is CVE-2026-91323 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-91323 being exploited in the wild.
- How severe is CVE-2026-91323?
- Critical severity, with a CVSS score of 9.8, published 20 October 2026.
- Which products and versions are affected?
- Oracle WebLogic Server 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, 15.1.1.0.0.
- Is there a fix for CVE-2026-91323?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. 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-2026-91323 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-91323?
- Check whether you run Oracle WebLogic Server 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.
Technical details
An easily exploitable, unauthenticated remote code execution vulnerability in Oracle WebLogic Server Core component allows attackers to achieve full server compromise via network access over HTTP. The vulnerability requires no authentication or user interaction and affects multiple supported versions including 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0.
Affected products
- Oracle WebLogic Server 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, 15.1.1.0.0
Timeline
- 2026-10-20: disclosed