Security Bulletin: IBM WebSphere Application Server Liberty prior to 26.0.0.9 is affected by multiple vulnerabilities

Summary IBM WebSphere Application Server Liberty prior to 26.0.0.9 is affected by multiple vulnerabilities. Vulnerability Details CVEID:CVE-2026-10841 DESCRIPTION: IBM WebSphere Application Server 8.5, 9.0, and Liberty are vulnerable to HTTP request smuggling. CWE:CWE-444: Inconsistent...

CVE-2026-100659

Netty's HTTP/3 codec io.netty:netty-codec-http3 in versions 4.2.0.Final through 4.2.17.Final does not enforce the RFC 9114 requirement that the :authority pseudo-header field and a literal host header field, when both present, carry the same value. A remote unauthenticated peer can send a single...

EUVD-2026-87753

Netty's HTTP/3 codec io.netty:netty-codec-http3 in versions 4.2.0.Final through 4.2.17.Final does not enforce the RFC 9114 requirement that the :authority pseudo-header field and a literal host header field, when both present, carry the same value. A remote unauthenticated peer can send a single...

PT-2026-99330

Name of the Vulnerable Software and Affected Versions netty-codec-http3 versions 4.2.0.Final through 4.2.17.Final Description The HTTP/3 codec fails to enforce the RFC 9114 requirement that the :authority pseudo-header field and a literal host header field must carry the same value when both are...

CVE-2026-11549

IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by a virtual host bypass vulnerability...

CVE-2026-11549 Multiple security vulnerabilities may affect IBM WebSphere Liberty that is shipped with IBM CICS TX Advanced.

IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by a virtual host bypass vulnerability...

EUVD-2026-83286

IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by a virtual host bypass vulnerability...

CVE-2026-11549 Multiple security vulnerabilities may affect IBM WebSphere Liberty that is shipped with IBM CICS TX Advanced.

IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by a virtual host bypass vulnerability...

CVE-2026-11549

CVE-2026-11549 is a virtual host bypass vulnerability (CWE-284: Improper Access Control) in IBM WebSphere Application Server and WebSphere Application Server Liberty . A remote, unauthenticated attacker over the network can exploit it with low complexity, resulting in low confidentiality and inte...

CVE-2026-11549: Improper Access Control

IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by a virtual host bypass vulnerability...

PT-2026-95608

Name of the Vulnerable Software and Affected Versions IBM WebSphere Application Server affected versions not specified IBM WebSphere Application Server Liberty affected versions not specified Description IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by a...