CVE-2026-91378: oracle corporation siebel crm integration Improper Access Control

Vulnerability summary

CVE-2026-91378 is a medium (CVSS 6.1) Improper Access Control vulnerability in oracle corporation siebel crm integration. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14% of scored vulnerabilities.

Timeline

1. 20-10-2026
   PublishedVulnerability first disclosed.
2. 21-10-2026
   Last modifiedVulnerability information updated.

Description

Vulnerability in the Siebel CRM Integration product of Oracle Siebel CRM (component: Open Integration). Supported versions that are affected are 25.12-26.9. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel CRM Integration. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Siebel CRM Integration, 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 Integration accessible data as well as unauthorized read access to a subset of Siebel CRM Integration accessible data. CVSS 3.1 Base Score 6.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).

• CWE-284Improper Access ControlThe product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.