CVE-2026-11538

IBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5.31 are affected by multiple vulnerabilities

Published Sep 18, 2026 CVSS 3.1 · 3.7 Low EPSS < 1% KEV · Not listed
Description
IBM WebSphere Application Server 9.0 and 8.5 is affected by a log injection vulnerability through crafted LTPA token cookies.

Remediation

Vendor Solution

IBM strongly recommends addressing the vulnerabilities now by applying the fix pack(s) listed below. For IBM WebSphere Application Server traditional: For V9.0.0.0 through 9.0.5.28: · Apply Fix Pack 9.0.5.29 (availability September 2026) or later fix pack. For V8.5.0.0 through 8.5.5.30: · Apply Fix Pack 8.5.5.31 (availability September 2026) or later fix pack.

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Description IBM WebSphere Application Server 9.0 and 8.5 is affected by a log injection vulnerability through crafted LTPA token cookies.
Title IBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5.31 are affected by multiple vulnerabilities
First Time appeared Ibm
Ibm websphere Application Server
Weaknesses CWE-117
CPEs cpe:2.3:a:ibm:websphere_application_server:8.5.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:9.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm websphere Application Server
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
ibm
Published
Updated
Sep 18, 2026, 7:46 PM
Reserved
Jun 8, 2026, 2:43 AM
Status
Analyzed
Published
Sep 18, 2026, 7:16 PM
Modified
Sep 24, 2026, 3:58 PM