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High severity · published Oct 20, 2026
CVE-2026-91552
Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites)
7.5
CVSS
0.4%
EPSS
No
On KEV
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. Easily exploitable 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 7.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OW
Oracle WebCenter Sites · Oracle Corporation
12.2.1.4.0; 14.1.2.0.0 · source: vendor
Affected product
OW
Oracle WebCenter Sites
Oracle Corporation
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-91552
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-91552
www.oracle.com
https://www.oracle.com/security-alerts/cpuoct2026.html
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