CVE-2026-114437 Affecting fluxcd-kustomize-mutating-webhook-fips package, versions <0.12.1-r5


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.13% (3rd percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-FLUXCDKUSTOMIZEMUTATINGWEBHOOKFIPS-21709196
  • published26 Oct 2026
  • disclosed21 Oct 2026

Introduced: 21 Oct 2026

NewCVE-2026-114437  (opens in a new tab)

How to fix?

Upgrade Chainguard fluxcd-kustomize-mutating-webhook-fips to version 0.12.1-r5 or higher.

NVD Description

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

In the Golang Chi web framework, the ClientIPFromXFF middleware skips any X-Forwarded-For entry in a configured trusted CIDR but never verifies that the direct TCP peer in http.Request.RemoteAddr belongs to that CIDR. A client that can reach the Go server directly can therefore append a trusted-looking proxy address and choose the client IP returned by middleware.GetClientIP.

This issue affects chi before 5.4.0.

CVSS Base Scores

version 3.1