High severity · published Oct 20, 2026
CVE-2026-91506
Vulnerability in the Workflow product of Oracle E-Business Suite (component: Workflow Notification Mailer)
8.1
CVSS
0.3%
EPSS
No
On KEV
Description
Vulnerability in the Workflow product of Oracle E-Business Suite (component: Workflow Notification Mailer). Supported versions that are affected are 12.2.3-12.2.15. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Workflow. Successful attacks of this vulnerability can result in takeover of Workflow. CVSS 3.1 Base Score 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 19% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WO
Workflow · Oracle Corporation
12.2.3 through 12.2.15 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-91506
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-91506
www.oracle.com
https://www.oracle.com/security-alerts/cpuoct2026.html
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