CVE-2026-11538

MEDIUM CVSS 3.1: 5.3 EPSS 0.16%
Updated Sep 24, 2026
IBM
Parameter Value
CVSS 5.3 (MEDIUM)
Affected Versions 8.5 — 9.0.5.29
Fixed In 8.5.5.31
Type CWE-117
Vendor IBM
Public PoC No

IBM WebSphere Application Server 9.0 and 8.5 is affected by a log injection vulnerability through crafted LTPA token cookies.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
None
No disruption

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products 2

Configuration From (including) Up to (excluding)
Ibm Websphere_Application_Server
cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:*
8.5 8.5.5.31
Ibm Websphere_Application_Server
cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:*
9.0 9.0.5.29