CVE-2026-11897: IBM WebSphere Application Server Liberty is affected by a denial of service vulnerability with HTTP/2
IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.7 is 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.
Other sources
IBM WebSphere Application Server Liberty is 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.
— 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 26.0.0.8Patch PH71839 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch PH71839
Event History
Frequently Asked Questions
What is the severity of CVE-2026-11897?
CVE-2026-11897 has a high severity score of 7.5.
What type of vulnerability is CVE-2026-11897?
CVE-2026-11897 is a denial of service vulnerability affecting IBM WebSphere Application Server Liberty.
How can CVE-2026-11897 be exploited?
CVE-2026-11897 can be exploited by sending a specially crafted HTTP/2 request to the server.
What versions of IBM WebSphere Application Server Liberty are affected by CVE-2026-11897?
CVE-2026-11897 affects IBM WebSphere Application Server Liberty versions 17.0.0.3 through 26.0.0.7.
What impact does CVE-2026-11897 have on the server?
CVE-2026-11897 can cause the server to consume memory resources, potentially leading to a denial of service.