CVE-2021-4435

low-risk
Published 2024-02-04

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.

Do I need to act?

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0.05% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.7/10 High
LOCAL / HIGH complexity

Affected Products (1)

Yarn

Affected Vendors

Yarnpkg

References (8)

Third Party Advisory https://access.redhat.com/security/cve/CVE-2021-4435
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=2262284
Patch https://github.com/yarnpkg/yarn/commit/67fcce88935e45092ffa2674c08053f1ef5268a1
Release Notes https://github.com/yarnpkg/yarn/releases/tag/v1.22.13
Third Party Advisory https://access.redhat.com/security/cve/CVE-2021-4435
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=2262284
Patch https://github.com/yarnpkg/yarn/commit/67fcce88935e45092ffa2674c08053f1ef5268a1
Release Notes https://github.com/yarnpkg/yarn/releases/tag/v1.22.13
25
/ 100
low-risk
Severity 20/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal