CVE-2026-4410: IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by a denial of service

Published May 27, 2026
·
Updated

IBM WebSphere Application Server - Liberty 19.0.0.7 through 26.0.0.5 and IBM WebSphere Application Server 9.0, and 8.5 and WebSphere Application Server Liberty are vulnerable to a denial of service, caused by sending a specially-crafted request. A remote attacker could exploit this vulnerability to cause the server to consume memory resources.

Affected Software

5 affected components
IBM WebSphere Application Server>=8.5.0.0<=8.5.5.29
IBM WebSphere Application Server>=9.0.0.0<=9.0.5.27
IBM WebSphere Application Server>=19.0.0.7<=26.0.0.5
IBM PowerVM Novalink<=2.2.02.2.12.2.1.1
IBM PowerVM Novalink<=2.3.02.3.0.12.3.12.3.2

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade IBM WebSphere Application Server Liberty to a version that resolves this vulnerability.

    Fixed in 26.0.0.6Patch APAR PH70807
  2. Upgrade

    Upgrade IBM WebSphere Application Server traditional to a version that resolves this vulnerability.

    Fixed in 8.5.5.30Patch APAR PH70807
  3. Upgrade

    Upgrade IBM WebSphere Application Server traditional to a version that resolves this vulnerability.

    Fixed in 9.0.5.28Patch APAR PH70807
  4. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Patch PH70616
  5. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Patch PH70807

Event History

May 27, 2026
CVE Published
via MITRE·12:54 PM
Data Sourced
via MITRE·12:54 PM
RemedyDescriptionSeverity
Data Sourced
via NVD·02:17 PM
DescriptionSeverityWeaknessAffected Software
Jul 16, 2026
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2026-4410?

CVE-2026-4410 has a medium severity rating of 4.8.

2

How do I fix CVE-2026-4410?

To fix CVE-2026-4410, apply the interim fix or fix pack that addresses APAR PH70807 and APAR PH70616.

3

What type of vulnerability is CVE-2026-4410?

CVE-2026-4410 is a denial of service vulnerability affecting IBM WebSphere Application Server and Liberty.

4

Which versions are affected by CVE-2026-4410?

CVE-2026-4410 affects IBM WebSphere Application Server versions 9.0, 8.5, and Liberty versions 19.0.0.7 through 26.0.0.5.

5

Who can exploit CVE-2026-4410?

A remote attacker can exploit CVE-2026-4410 by sending a specially-crafted request to the affected software.

Company

Resources

Contact

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