Quick answers
- Is CVE-2026-91339 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-91339 being exploited in the wild.
- How severe is CVE-2026-91339?
- Medium severity, with a CVSS score of 6.5, published 20 October 2026.
- Which products and versions are affected?
- Oracle E-Business Suite iSupport 12.2.3 to 12.2.15.
- Is there a fix for CVE-2026-91339?
- 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-2026-91339 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-91339?
- Check whether you run Oracle E-Business Suite iSupport 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 vulnerability in the Service Requests component of iSupport allows a low-privileged attacker with network access to achieve unauthorized information disclosure via HTTP. The vulnerability requires only network access and low privileges, with no user interaction needed. Successful exploitation results in high-impact confidentiality breach, allowing access to all data accessible by iSupport.
Affected products
- Oracle E-Business Suite iSupport 12.2.3 to 12.2.15
Timeline
- 2026-10-20: disclosed