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Back to active CVEs
High · CVSS 7.5CVE-2026-105442

IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by a deserialization of untrusted dataCVE-2026-105442

Answer in brief

CVE-2026-105442 records a High severity (CVSS 7.5) vulnerability in IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by a deserialization of untrusted data. The current sources do not mark it as known exploited. The current feed maps IBM/WebSphere Application Server (generic), IBM/WebSphere Application Server - Liberty (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 13, 2026Updated Oct 13, 2026Source checked Oct 13, 2026First seen by HOL Oct 13, 2026Material review Oct 13, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.5
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps IBM/WebSphere Application Server (generic), IBM/WebSphere Application Server - Liberty (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
IBM/WebSphere Application Servergeneric8.5 || 9.0Not reported
IBM/WebSphere Application Server - Libertygeneric>=17.0.0.3 <=26.0.0.10Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for IBM/WebSphere Application Server, IBM/WebSphere Application Server - Liberty.
  2. 2Review the reported fix. Source-reported solution: IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the fix for APAR DT503516 or DT503624. 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 - 26.0.0.10: · Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves DT503516 https://www.ibm.com/support/pages/node/7292199 --OR-- · Apply Fix Pack 26.0.0.11 or later (targeted availability 4Q2026). For IBM WebSphere Application Server traditional: For V9.0.0.0 through 9.0.5.29: · Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves DT503624 https://www.ibm.com/support/pages/node/7292200 --OR-- · Apply Fix Pack 9.0.5.30 or later (targeted availability 4Q2026).   For V8.5.0.0 through 8.5.5.31: · Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix that resolves DT503624 https://www.ibm.com/support/pages/node/7292200 --OR-- · Apply Fix Pack 8.5.5.32 or later (targeted availability 4Q2026). Additional interim fixes may be available and linked off the interim fix download page.

Evidence timeline and material changes

  1. Published upstream

    Oct 13, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 13, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 13, 2026

Sources and claim methodology

  • Source referenceibm.com
Upstream source description

IBM WebSphere Application Server 8.5, and 9.0 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.10 Liberty could allow a remote attacker to cause a denial of service caused by an insecure deserialization in the messaging service.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Photoshop Desktop | Out-of-bounds Write (CWE-787)Same generic ecosystem
  • Photoshop Desktop | Out-of-bounds Write (CWE-787)Same generic ecosystem
  • Bridge | Out-of-bounds Read (CWE-125)Same generic ecosystem
  • Bridge | Out-of-bounds Write (CWE-787)Same generic ecosystem
  • Bridge | Out-of-bounds Write (CWE-787)Same generic ecosystem
  • Bridge | Out-of-bounds Write (CWE-787)Same generic ecosystem

Record context

Vulnerability class
Deserialization
EPSS
Not reported
CWE IDs
CWE-502
Source
CVE List V5
Source checked
Oct 13, 2026
References
1 linked source
Open source record