CVE-2025-58186 Affecting k3d package, versions <5.8.3-r18


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.02% (6th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-K3D-13811874
  • published3 Nov 2025
  • disclosed29 Oct 2025

Introduced: 29 Oct 2025

CVE-2025-58186  (opens in a new tab)

How to fix?

Upgrade Chainguard k3d to version 5.8.3-r18 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream k3d package and not the k3d package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

Despite HTTP headers having a default limit of 1MB, the number of cookies that can be parsed does not have a limit. By sending a lot of very small cookies such as "a=;", an attacker can make an HTTP server allocate a large amount of structs, causing large memory consumption.

CVSS Base Scores

version 3.1