Medium severity · published Oct 20, 2026
CVE-2026-91399
Vulnerability in the Primavera P6 Enterprise Project Portfolio Management product of Oracle Construction and Engineering (component: Web Access)
4.3
CVSS
0.2%
EPSS
No
On KEV
Description
Vulnerability in the Primavera P6 Enterprise Project Portfolio Management product of Oracle Construction and Engineering (component: Web Access). Supported versions that are affected are 21.12.0.0-21.12.21.9, 22.12.0.0-22.12.21.4, 23.12.0-23.12.20, 24.12.0-24.12.16 and 25.12.0-25.12.8. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Primavera P6 Enterprise Project Portfolio Management. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Primavera P6 Enterprise Project Portfolio Management accessible data. CVSS 3.1 Base Score 4.3 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 9% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PP
Primavera P6 Enterprise Project Portfolio Management · Oracle Corporation
21.12.0.0 through 21.12.21.9; 22.12.0.0 through 22.12.21.4; 23.12.0 through 23.12.20; 24.12.0 through 24.12.16; 25.12.0 through 25.12.8 · source: vendor
Affected product
PP
Primavera P6 Enterprise Project Portfolio Management
Oracle Corporation
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-91399
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-91399
www.oracle.com
https://www.oracle.com/security-alerts/cpuoct2026.html
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