Allocation of Resources Without Limits or Throttling Affecting zipkin package, versions <3.6.1-r10


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.61% (45th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-ZIPKIN-17334274
  • published13 Jun 2026
  • disclosed12 Jun 2026

Introduced: 12 Jun 2026

NewCVE-2026-45416  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade Chainguard zipkin to version 3.6.1-r10 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 Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, SslClientHelloHandler.decode() reads the 24-bit TLS handshake length and, when the ClientHello does not fit in the first record, eagerly allocates ctx.alloc().buffer(handshakeLength) (line 161). The guard at line 140 is handshakeLength &gt; maxClientHelloLength &amp;&amp; maxClientHelloLength != 0, and the commonly-used SniHandler/AbstractSniHandler constructors (SniHandler(Mapping), SniHandler(AsyncMapping), AbstractSniHandler()) pass maxClientHelloLength=0 and handshakeTimeoutMillis=0, so the length guard is disabled and no timeout is scheduled. A 16 MiB request exceeds the default pooled chunk size and becomes a huge/unpooled allocation performed immediately. The buffer is retained in the handler until the channel closes. Versions 4.1.135.Final and 4.2.15.Final patch the issue.

CVSS Base Scores

version 3.1