Vulnerability · Published Oct 20, 2026 · Assigned by oracle

CVE-2026-91430

Medium 6.5

In plain English

A medium-severity missing authentication in Siebel Apps - Financial Services from Oracle Corporation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.2%top 85.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Vulnerability in the Siebel Apps - Financial Services product of Oracle Siebel CRM (component: Financial Accounts). 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 Apps - Financial Services. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Siebel Apps - Financial Services accessible data as well as unauthorized update, insert or delete access to some of Siebel Apps - Financial Services accessible data. CVSS 3.1 Base Score 6.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N).

Affected products (as reported)

Vendor	Product	Versions
Oracle Corporation	Siebel Apps - Financial Services	17.0 – through 26.9

Weakness: CWE-306 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

References

Oracle Advisory vendor-advisory