Quick answers
- Is CVE-2026-91378 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-91378 being exploited in the wild.
- How severe is CVE-2026-91378?
- Medium severity, with a CVSS score of 6.1, published 20 October 2026.
- Which products and versions are affected?
- Oracle Siebel CRM Integration 25.12 to 26.9.
- Is there a fix for CVE-2026-91378?
- 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-2026-91378 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-91378?
- Check whether you run Oracle Siebel CRM Integration 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 Open Integration component of Siebel CRM Integration allows unauthenticated attackers to gain unauthorized data access via network/HTTP. The attack requires user interaction (likely a CSRF or similar social engineering vector) and has cross-scope impact on other products. Successful exploitation yields unauthorized read and write access to Siebel data.
Affected products
- Oracle Siebel CRM Integration 25.12 to 26.9
Timeline
- 2026-10-20: disclosed