Improper Input Validation Affecting s3proxy-fips package, versions <3.1.0-r2


Severity

Recommended
0.0
critical
0
10

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Threat Intelligence

EPSS
0.97% (58th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-S3PROXYFIPS-16539592
  • published8 May 2026
  • disclosed13 May 2026

Introduced: 8 May 2026

CVE-2026-42579  (opens in a new tab)
CWE-20  (opens in a new tab)
CWE-400  (opens in a new tab)
CWE-626  (opens in a new tab)

How to fix?

Upgrade Chainguard s3proxy-fips to version 3.1.0-r2 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 4.2.13.Final and 4.1.133.Final, Netty's DNS codec does not enforce RFC 1035 domain name constraints during either encoding or decoding. This creates a bidirectional attack surface: malicious DNS responses can exploit the decoder, and user-influenced hostnames can exploit the encoder. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.

CVSS Base Scores

version 3.1