Quick answers
- Is CVE-2026-91240 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-91240 being exploited in the wild.
- How severe is CVE-2026-91240?
- Medium severity, with a CVSS score of 5.9, published 20 October 2026.
- Which products and versions are affected?
- Oracle WebCenter Sites 12.2.1.4.0, 14.1.2.0.0.
- Is there a fix for CVE-2026-91240?
- 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-2026-91240 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-91240?
- Check whether you run Oracle WebCenter Sites 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 unauthenticated network-based vulnerability in Oracle WebCenter Sites allows attackers with HTTP access to compromise the application. The vulnerability has high attack complexity but no authentication or user interaction requirements, leading to confidentiality impact through unauthorized data access. The affected versions are 12.2.1.4.0 and 14.1.2.0.0.
Affected products
- Oracle WebCenter Sites 12.2.1.4.0, 14.1.2.0.0
Timeline
- 2026-10-20: disclosed