Quick answers
- Is CVE-2026-91412 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-91412 being exploited in the wild.
- How severe is CVE-2026-91412?
- Medium severity, with a CVSS score of 6.5, published 20 October 2026.
- Which products and versions are affected?
- Oracle Siebel CRM End User 17.0–26.9.
- Is there a fix for CVE-2026-91412?
- 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-2026-91412 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-91412?
- Check whether you run Oracle Siebel CRM End User 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
The Open UI component in Siebel CRM End User contains an access control vulnerability allowing low-privileged authenticated users to exfiltrate data via HTTP. The flaw requires network access and valid credentials but no user interaction, and only impacts confidentiality—integrity and availability are not affected. The vulnerability affects versions 17.0 through 26.9.
Affected products
- Oracle Siebel CRM End User 17.0–26.9
Timeline
- 2026-10-20: disclosed