CVE-2026-91240 Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites).
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-91240?
CVE-2026-91240 is a medium-severity vulnerability in Oracle WebCenter Sites, published on 20 Oct 2026.
Official description
Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle WebCenter Sites. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle WebCenter Sites accessible data. CVSS 3.1 Base Score 5.9 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N).
Weakness: CWE-284
Which versions are affected by CVE-2026-91240?
How do I fix CVE-2026-91240?
No fix has been published for CVE-2026-91240 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-91240 being exploited?
There is no known exploitation of CVE-2026-91240 in the wild and no public exploit code.
Sources
Also known as GHSA-8cg2-mr66-2ffg.