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Vulnerability record · CVE-2021-4435 · published 4 February 2024

CVE-2021-4435: Yarnpkg yarn untrusted search path vulnerability

Yarnpkg · Yarn

An untrusted search path vulnerability was found in Yarn. When a victim runs certain Yarn commands in a directory with attacker-controlled content, malicious commands could be executed in unexpected ways.

7.8 CVSS 3.1 High EPSS 0.30% · top 79.6% CWE-426 · Untrusted search path
7.8CVSS 3.1 base score
0.30%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

An untrusted search path vulnerability was found in Yarn. When a victim runs certain Yarn commands in a directory with attacker-controlled content, malicious commands could be executed in unexpected ways.

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/security/cve/CVE-2021-4435 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2262284 Issue Tracking
https://github.com/yarnpkg/yarn/commit/67fcce88935e45092ffa2674c08053f1ef5268a1 Patch
https://github.com/yarnpkg/yarn/releases/tag/v1.22.13 Release Notes
https://access.redhat.com/security/cve/CVE-2021-4435 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2262284 Issue Tracking
https://github.com/yarnpkg/yarn/commit/67fcce88935e45092ffa2674c08053f1ef5268a1 Patch
https://github.com/yarnpkg/yarn/releases/tag/v1.22.13 Release Notes

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Source: NIST National Vulnerability Database (record CVE-2021-4435), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.