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Package details: pkg:npm/y18n@3.2.2
purl pkg:npm/y18n@3.2.2
Vulnerabilities affecting this package (0)
Vulnerability Summary Fixed by
This package is not known to be affected by vulnerabilities.
Vulnerabilities fixed by this package (1)
Vulnerability Summary Aliases
VCID-fu8u-pxaa-43be Prototype Pollution in y18n ### Overview The npm package `y18n` before versions 3.2.2, 4.0.1, and 5.0.5 is vulnerable to Prototype Pollution. ### POC ```js const y18n = require('y18n')(); y18n.setLocale('__proto__'); y18n.updateLocale({polluted: true}); console.log(polluted); // true ``` ### Recommendation Upgrade to version 3.2.2, 4.0.1, 5.0.5 or later. CVE-2020-7774
GHSA-c4w7-xm78-47vh

Date Actor Action Vulnerability Source VulnerableCode Version
2026-04-02T16:56:19.658018+00:00 GHSA Importer Fixing VCID-fu8u-pxaa-43be https://github.com/advisories/GHSA-c4w7-xm78-47vh 38.1.0
2026-04-02T12:37:38.935564+00:00 GitLab Importer Fixing VCID-fu8u-pxaa-43be https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/y18n/CVE-2020-7774.yml 38.0.0
2026-04-01T13:01:56.281941+00:00 GithubOSV Importer Fixing VCID-fu8u-pxaa-43be https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/03/GHSA-c4w7-xm78-47vh/GHSA-c4w7-xm78-47vh.json 38.0.0