Resource Exhaustion Affecting s3proxy-fips package, versions <3.3.0-r5


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.5% (40th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-S3PROXYFIPS-18310229
  • published26 Jul 2026
  • disclosed21 Jul 2026

Introduced: 21 Jul 2026

NewCVE-2026-56745  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Chainguard s3proxy-fips to version 3.3.0-r5 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream s3proxy-fips package and not the s3proxy-fips 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. In versions 4.2.0.Final through 4.2.15.Final and 4.1.0.Final through 4.1.135.Final, the SpdyHttpDecoder handler in Netty's SPDY-to-HTTP codec allocates a pooled ByteBuf when processing a client-initiated SYN_STREAM frame with FLAG_FIN=0 and stores the partially constructed FullHttpRequest in messageMap; when the remote peer sends RST_STREAM for that stream or the accumulated content exceeds maxContentLength, the decoder removes the entry but does not release the pooled ByteBuf, causing native memory exhaustion. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.

CVSS Base Scores

version 3.1