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CVE-2026-73507

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-73507

Severity

7.5

High

CVSS V3

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Summary

Netty: Denial of Service in XmlFrameDecoder via CPU Exhaustion

Description

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 </ sequences that repeatedly rescanned the accumulated buffer and exhausted an EventLoop thread's CPU, causing denial of service with a maxFrameLength of 1 MB. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.

References

Affected packages

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