Description
IBM WebSphere Application Server and IBM WebSphere Application Server - Liberty is vulnerable to HTTP request smuggling due to improper handling of TRACE requests.
Published: 2026-07-28
Score: 8.7 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

IBM WebSphere Application Server and IBM WebSphere Application Server - Liberty are vulnerable to HTTP request smuggling caused by improper handling of TRACE requests. This flaw, identified as CWE-444, allows an attacker to alter how HTTP traffic is parsed, potentially leading to request or response splitting. The documented impact is limited to manipulation of HTTP exchanges, with no explicit mention of data exfiltration or other downstream effects.

Affected Systems

Affected products include IBM WebSphere Application Server (traditional) versions 8.5.x up to 8.5.5.30 and 9.0.x up to 9.0.5.28. IBM WebSphere Application Server – Liberty releases 17.0.0.3 through 26.0.0.7 that enable servlet APIs 3.0 to 6.1.

Risk and Exploitability

The CVSS score of 8.7 signals high severity. The EPSS score of <1% suggests a low probability of exploitation in the wild. The vulnerability is not listed in the CISA KEV catalog. Likely exploitation requires an external attacker able to send HTTP TRACE requests to a publicly reachable WebSphere App Server, indicating a network‑level attack from outside the protected environment.

Generated by OpenCVE AI on August 6, 2026 at 23:53 UTC.

Remediation

Vendor Solution

IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the fix for APAR PH72191 or PH72192. To determine if a feature is enabled for WebSphere Application Server Liberty, refer to  How to determine if Liberty is using a specific feature https://www.ibm.com/support/pages/node/6553910 .   For IBM WebSphere Application Server Liberty 17.0.0.3 - 26.0.0.7 using servlet-3.0, servlet-3.1, servlet-4.0, servlet-5.0, servlet-6.0, or servlet-6.1  feature(s): · Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves PH72191 https://www.ibm.com/support/pages/node/7277460 --OR-- · Apply Fix Pack 26.0.0.8 or later (targeted availability 3Q2026). For IBM WebSphere Application Server traditional: For V9.0.0.0 through 9.0.5.28: · Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves PH72192 https://www.ibm.com/support/pages/node/7281143 --OR-- · Apply Fix Pack 9.0.5.29 or later (targeted availability 3Q2026).   For V8.5.0.0 through 8.5.5.30: · Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix that resolves PH72192 https://www.ibm.com/support/pages/node/7281143 --OR-- · Apply Fix Pack 8.5.5.31 or later (targeted availability 3Q2026). Additional interim fixes may be available and linked off the interim fix download page.

OpenCVE Recommended Actions

  • Apply IBM interim fix PH72191 for Liberty installations before the targeted release, or upgrade to Liberty fix pack 26.0.0.8 or later when available.
  • Apply IBM interim fix PH72192 for WebSphere Application Server traditional before the targeted release, or upgrade to fix pack 9.0.5.29 (or 8.5.5.31 for 8.5.x builds) when available.
  • Disable or block the HTTP TRACE method on the web server to reduce exposure while the patch is pending.

Generated by OpenCVE AI on August 6, 2026 at 23:53 UTC.

Tracking

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Advisories

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History

Thu, 06 Aug 2026 22:15:00 +0000

Type Values Removed Values Added
Description IBM WebSphere Application Server 9.0, and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.7 is vulnerable to HTTP request smuggling due to improper handling of TRACE requests. IBM WebSphere Application Server and IBM WebSphere Application Server - Liberty is vulnerable to HTTP request smuggling due to improper handling of TRACE requests.

Wed, 29 Jul 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Tue, 28 Jul 2026 20:45:00 +0000

Type Values Removed Values Added
Description IBM WebSphere Application Server 9.0, and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.7 is vulnerable to HTTP request smuggling due to improper handling of TRACE requests.
Title IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by multiple vulnerabilities
First Time appeared Ibm
Ibm websphere Application Server
Ibm websphere Application Server Liberty
Weaknesses CWE-444
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:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server___liberty:17.0.0.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server___liberty:26.0.0.7:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm websphere Application Server
Ibm websphere Application Server Liberty
References
Metrics cvssV3_1

{'score': 8.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N'}

Subscriptions

Ibm Websphere Application Server Websphere Application Server Liberty
cve-icon MITRE

Status: PUBLISHED

Assigner: ibm

Published:

Updated: 2026-08-06T20:24:22.473Z

Reserved: 2026-07-09T18:18:09.780Z

Link: CVE-2026-15325

cve-icon Vulnrichment

Updated: 2026-07-29T12:39:55.372Z

cve-icon NVD

Status : Modified

Published: 2026-07-28T21:17:27.770

Modified: 2026-08-06T22:16:48.150

Link: CVE-2026-15325

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-07T00:00:05Z

Weaknesses
  • CWE-444

    Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')