Resource Exhaustion Affecting s3proxy package, versions <3.1.0-r3


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.43% (35th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-CHAINGUARDLATEST-S3PROXY-16539576
  • published8 May 2026
  • disclosed13 May 2026

Introduced: 8 May 2026

CVE-2026-42583  (opens in a new tab)
CWE-400  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade Chainguard s3proxy to version 3.1.0-r3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream s3proxy package and not the s3proxy package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Lz4FrameDecoder allocates a ByteBuf of size decompressedLength (up to 32 MB per block) before LZ4 runs. A peer only needs a 21-byte header plus compressedLength payload bytes - 22 bytes if compressedLength == 1 - to force that allocation. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.

CVSS Base Scores

version 3.1