CVE-2025-58186 Affecting cis-operator-1.2 package, versions <1.2.7-r5


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-CISOPERATOR12-13816658
  • published3 Nov 2025
  • disclosed29 Oct 2025

Introduced: 29 Oct 2025

NewCVE-2025-58186  (opens in a new tab)

How to fix?

Upgrade Chainguard cis-operator-1.2 to version 1.2.7-r5 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream cis-operator-1.2 package and not the cis-operator-1.2 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