Allocation of Resources Without Limits or Throttling Affecting s3proxy-fips package, versions <3.3.0-r5


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.34% (27th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-S3PROXYFIPS-18310240
  • published26 Jul 2026
  • disclosed29 Jul 2026

Introduced: 26 Jul 2026

NewCVE-2026-59899  (opens in a new tab)
CWE-770  (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 an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, HttpContentEncoder (the superclass of the production handler HttpContentCompressor) maintains a per-channel ArrayDeque&lt;CharSequence&gt; named acceptEncodingQueue that accumulates attacker-controlled data without any size limit. The queue is filled on the I/O thread for every inbound HTTP request and drained only when the application later writes a non-1xx response. This creates a resource exhaustion vulnerability when an attacker exploits HTTP/1.1 pipelining to flood the connection with requests faster than the application produces responses. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.

CVSS Base Scores

version 3.1