CVE-2026-91388 Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM (component: Open UI).
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-91388?
CVE-2026-91388 is a medium-severity vulnerability in Oracle Corporation Siebel CRM End User, published on 20 Oct 2026.
Official description
Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM (component: Open UI). Supported versions that are affected are 17.0-26.9. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel CRM End User. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Siebel CRM End User, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Siebel CRM End User accessible data as well as unauthorized read access to a subset of Siebel CRM End User accessible data. CVSS 3.1 Base Score 4.7 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N).
Weakness: CWE-284
Which versions are affected by CVE-2026-91388?
How do I fix CVE-2026-91388?
No fix has been published for CVE-2026-91388 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-91388 being exploited?
There is no known exploitation of CVE-2026-91388 in the wild and no public exploit code.
Sources
Also known as GHSA-vvmj-vpgh-w28v.