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EPSS 0.2%top 88%

CVE-2026-5516: Vulnerability in IBM WebSphere Application Server - Liberty

0
Medium
VulnerabilityCVE-2026-5516cvecve-2026-5516
Published: 05/27/2026 (05/27/2026, 13:00:04 UTC)
Source: CVE Database V5
Vendor/Project: IBM
Product: WebSphere Application Server - Liberty

Description

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.

CVSS v3.1

Score 4.4medium

Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N

Affected software

Affected versions
=22.0.0.11

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 06/03/2026, 20:12:31 UTC

Technical Analysis

IBM WebSphere Application Server - Liberty versions 22.0.0.11 through 26.0.0.5 contain a vulnerability (CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization) that could allow a remote attacker with high privileges to bypass security protections by exploiting a timing window. The CVSS 3.1 base score is 4.4, reflecting network attack vector, high attack complexity, required privileges, no user interaction, unchanged scope, high confidentiality impact, and no impact on integrity or availability. The vulnerability is published but no patch or official remediation level has been provided by IBM as of the publication date.

Potential Impact

An attacker with high privileges on the network could exploit this timing window vulnerability to bypass security controls, potentially leading to unauthorized access to confidential information. The vulnerability does not affect data integrity or availability. There are no known active exploits in the wild at this time.

Mitigation Recommendations

Patch status is not yet confirmed — check the IBM vendor advisory for current remediation guidance. Since no official fix or temporary mitigation is currently documented, monitor IBM's security advisories for updates. Until a patch is available, limit exposure by restricting network access to the affected WebSphere Application Server instances and ensure that only trusted users have high privileges.

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Technical Details

Data Version
5.2
Assigner Short Name
ibm
Date Reserved
2026-04-03T21:59:13.972Z
Cvss Version
3.1
State
PUBLISHED
Remediation Level
null

Threat ID: 6a16f9d5e29bf47b50c0e95c

Added to database: 05/27/2026, 14:04:05 UTC

Last enriched: 06/03/2026, 20:12:31 UTC

Last updated: 07/31/2026, 19:22:59 UTC

Views: 33

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