CVE-2026-73507 (GCVE-0-2026-73507)

Vulnerability from cvelistv5 – Published: 2026-08-13 14:25 – Updated: 2026-08-15 03:16
VLAI
Title
Netty: Denial of Service in XmlFrameDecoder via CPU Exhaustion
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 </ 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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-15 03:15 UTC
CWE
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
References
Impacted products
Vendor Product Version CPE status
netty netty Affected: < 4.1.136.Final
Affected: >= 4.2.0.Final, < 4.2.16.Final
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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