CVE-2026-14976: IBM WebSphere Application Server Liberty is affected by a remote code execution and path-segment injection vulnerability
IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.8 is affected by remote code execution with the collectiveController-1.0 feature enabled.
Other sources
IBM WebSphere Application Server Liberty is affected by remote code execution with the collectiveController-1.0 feature enabled.
— IBM
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
IBM WebSphere Application Server Libertyto a version that resolves this vulnerability.Fixed in 26.0.0.9Patch DT496531 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch DT496531 - Configuration
If the collectiveController-1.0 feature is enabled, apply the interim fix/fix pack that resolves APAR DT496531 (the page notes the vulnerability is present when this feature is enabled).
IBM WebSphere Application Server Liberty (collectiveController-1.0 feature) collectiveController-1.0 = enabled
Event History
Frequently Asked Questions
What is the severity of CVE-2026-14976?
CVE-2026-14976 has been classified as high severity with a score of 7.1.
What type of vulnerability is CVE-2026-14976?
CVE-2026-14976 is a remote code execution and path-segment injection vulnerability.
Is my IBM WebSphere Application Server Liberty affected by CVE-2026-14976?
IBM WebSphere Application Server Liberty versions 17.0.0.3 through 26.0.0.8 with the collectiveController-1.0 feature enabled are affected by CVE-2026-14976.
How do I fix CVE-2026-14976?
To mitigate CVE-2026-14976, you should update your IBM WebSphere Application Server Liberty to a patched version that resolves this vulnerability.
What impact does CVE-2026-14976 have on my system?
CVE-2026-14976 allows attackers to execute arbitrary code on the impacted machine, posing serious security risks.