Resource Exhaustion Affecting zipkin package, versions <3.6.1-r18


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.52% (41st percentile)

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  • Snyk IDSNYK-WOLFILATEST-ZIPKIN-18332079
  • published28 Jul 2026
  • disclosed21 Jul 2026

Introduced: 21 Jul 2026

NewCVE-2026-55851  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Wolfi zipkin to version 3.6.1-r18 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream zipkin package and not the zipkin package as distributed by Wolfi. See How to fix? for Wolfi relevant fixed versions and status.

Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final up to (but not including) 4.2.16.Final, and 4.1.0.Final up to (but not including) 4.1.135, the HAProxyMessageDecoder in Netty's codec-haproxy module performs protocol version detection by reading the 13th byte as a signed Java byte and widening it to int without masking; a PROXY protocol v2 binary prefix followed by version byte 0xFF sign-extends to -1, collides with the decoder's need-more-data sentinel, and causes ByteToMessageDecoder to accumulate inbound bytes in an unbounded cumulation buffer until direct memory is exhausted. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.

CVSS Base Scores

version 3.1