High [CVE-2026-73507] Denial of Service via CPU Exhaustion in XmlFrameDecoder
This high-severity Red Hat Linux advisory covers CVE-2026-73507 affecting Red Hat build of Apache Camel 4.18.4 for Spring Boot 3.5.16, Red Hat Single Sign-On 7.
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Summary
Netty is an asynchronous, event-driven network application framework. Prior to 4.1.136.Final and 4.2.16.Final, io.netty.handler.codec.xml.
XmlFrameDecoder.decode() failed to preserve closing-tag parser state across invocations, so an unauthenticated remote attacker could trickle-feed repeated
Affected products named by the advisory: Red Hat build of Apache Camel 4.18.4 for Spring Boot 3.5.16; Red Hat Single Sign-On 7.
- < 4.1.136.Final
- < 4.2.16.Final
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
- 4.1.136
- 4.2.16
- netty-codec-xml
- RHSA-2026:71675
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
Mitigation checklist
- Red Hat products do not use the vulnerable XmlFrameDecoder component. No mitigation is required for standard product deployments. Custom applications built on Red Hat middleware that explicitly instantiate XmlFrameDecoder should avoid processing untrusted XML input or upgrade to netty-codec-xml 4.1.136.Final or later.
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
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