A vulnerability was found in Undertow. This issue requires enabling the learning-push handler in the server's config, which is disabled by default, leaving the maxAge config in the handler unconfigured. The default is -1, which makes the handler vulnerable. If someone overwrites that config, the server is not subject to the attack. The attacker needs to be able to reach the server with a normal HTTP request.

Affected: Maven: io.undertow:undertow-core

A vulnerability was found in Undertow. This issue requires enabling the learning-push handler in the server's config, which is disabled by default, leaving the maxAge config in the handler unconfigured. The default is -1, which makes the handler vulnerable. If someone overwrites that config, the server is not subject to the attack. The attacker needs to be able to reach the server with a normal HTTP request.

jose4j: denial of service via specially crafted JWE undertow: LearningPushHandler can lead to remote memory DoS attacks undertow: response write hangs in case of Java 17 TLSv1.3 NewSessionTicket httpd: CONTINUATION frames DoS

Affected: Ubuntu:Pro:16.04:LTS: undertow, Ubuntu:Pro:18.04:LTS: undertow, Ubuntu:Pro:20.04:LTS: undertow, Ubuntu:Pro:22.04:LTS: undertow, Ubuntu:Pro:24.04:LTS: undertow, Ubuntu:25.10: undertow, Ubuntu:26.04:LTS: undertow

A vulnerability was found in Undertow. This issue requires enabling the learning-push handler in the server's config, which is disabled by default, leaving the maxAge config in the handler unconfigured. The default is -1, which makes the handler vulnerable. If someone overwrites that config, the server is not subject to the attack. The attacker needs to be able to reach the server with a normal HTTP request.

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Red Hat JBoss Enterprise Application Platform ausnutzen, um einen Denial of Service Angriff durchzuführen.