Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') Affecting gitlab-rails-ce-fips-18.10 package, versions <18.10.8-r8


Severity

Recommended
0.0
low
0
10

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Threat Intelligence

EPSS
0.39% (31st percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-GITLABRAILSCEFIPS1810-20676159
  • published9 Oct 2026
  • disclosed13 Sept 2026

Introduced: 13 Sep 2026

CVE-2026-90771  (opens in a new tab)
CWE-1321  (opens in a new tab)

How to fix?

Upgrade Chainguard gitlab-rails-ce-fips-18.10 to version 18.10.8-r8 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gitlab-rails-ce-fips-18.10 package and not the gitlab-rails-ce-fips-18.10 package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

joi before versions 17.13.8 and 18.2.9 contains a prototype pollution vulnerability in the messages compilation function that accepts proto as an error code. Attackers can supply proto keys in custom messages to replace the returned object's prototype, breaking downstream code relying on Object.prototype methods.

CVSS Base Scores

version 3.1