CVE-2026-91431CWE-284broken-access-control

CVE-2026-91431

Medium · published October 21, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
1.7
In the wild
Unconfirmed
What it is

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. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where Siebel CRM End User executes to compromise Siebel CRM End User. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Siebel CRM End User accessible data. CVSS 3.1 Base Score 5.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00118 · 1.7th percentile
Weakness
CWE-284 · Improper Access Control
Published
2026-10-21T02:20Z
References (1)
EPSS history
Timeline
  • 22 OCT 03:36Z
    EPSS moved — → 0%
    epss
  • 20 OCT 21:25Z
    Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM (component: Open UI)
    cvelistv5
  • 20 OCT 21:25Z
    Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM (component: Open UI)
    cvelistv5