Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

A vulnerability was found in Undertow where the WebSocketContainer and its boot process do not allow setting the binaryBuffer and textBuffer sizes, along with session duration and async send timeout. These parameters default to infinite. This is a follow-up to CVE-2026-5680, as the initial fix allowed setting buffer sizes for certain types but left async send and session duration as infinite and inaccessible for configuration. An attacker could exploit these infinite defaults to cause resource exhaustion or an Out of Memory (OOME) condition on the server.