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Security Advisories

CVE-2026-59901

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-59901

Severity

Unknown
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Summary

Netty Bzip2Decoder: Infinite Loop in RLE State Machine Leads to Event-Loop Thread Hang

Description

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, the Bzip2Decoder handler in Netty's compression codec pipeline is vulnerable to a denial-of-service attack through a malformed bzip2 stream that permanently captures the event-loop thread in an infinite loop. The vulnerability exists in the run-length encoding (RLE) state machine within [Bzip2BlockDecompressor.read()]. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.

References

  • https://nvd.nist.gov/vuln/detail/CVE-2026-59901
  • https://github.com/advisories/GHSA-558v-64gr-wgg4
  • https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59901.json
  • https://github.com/netty/netty/security/advisories/GHSA-558v-64gr-wgg4

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