CVE-2026-5516: IBM WebSphere Application Server Liberty is affected by a security bypass vulnerability

Published May 27, 2026
·
Updated

IBM WebSphere Application Server - Liberty 22.0.0.11 through 26.0.0.5 IBM WebSphere Application Server Liberty could allow a remote attacker to bypass security under limited conditions by exploiting a specific timing window.

Affected Software

5 affected components
IBM WebSphere Application Server>=22.0.0.11<=26.0.0.5
IBM Verify Identity Access<=11.0 - 11.0.2
IBM Security Verify Access<=10.0 - 10.0.9.1
IBM Verify Identity Access Container<=11.0 - 11.0.2
IBM Security Verify Access Container<=10.0 - 10.0.9.1

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 PH70798

Event History

May 27, 2026
CVE Published
via MITRE·01:00 PM
Data Sourced
via MITRE·01:00 PM
RemedyDescriptionSeverity
Data Sourced
via NVD·02:17 PM
DescriptionSeverityWeaknessAffected Software
Jul 8, 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-2026-5516?

The severity of CVE-2026-5516 is medium, with a score of 5.9.

2

What software is affected by CVE-2026-5516?

CVE-2026-5516 affects IBM WebSphere Application Server Liberty versions 22.0.0.11 through 26.0.0.5.

3

How can I fix CVE-2026-5516?

To fix CVE-2026-5516, IBM recommends applying the available interim fix or fix pack that addresses APAR PH70798.

4

What type of vulnerability is CVE-2026-5516?

CVE-2026-5516 is classified as a security bypass vulnerability caused by a race condition.

5

Can CVE-2026-5516 be exploited remotely?

Yes, CVE-2026-5516 can be exploited by a remote attacker under specific timing conditions.

Company

Resources

Contact

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