Inefficient Regular Expression Complexity in Yarn by yarnpkg
CVE-2025-9308

4.8MEDIUM

Key Information:

Vendor

Yarnpkg

Status
Yarn
Vendor
CVE Published:
21 August 2025

What is CVE-2025-9308?

A vulnerability exists in the Yarn package manager, specifically in the setOptions function located in src/util/request-manager.js. This flaw results in inefficient regular expression complexity, posing a risk that could be exploited by users with local access. It primarily affects versions of Yarn that are no longer maintained, making them more susceptible to potential manipulations.

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Affected Version(s)

Yarn 1.22.0

Yarn 1.22.1

Yarn 1.22.2

References

https://vuldb.com/?id.320913
vdb-entrytechnical-description
https://vuldb.com/?ctiid.320913
signaturepermissions-required
https://vuldb.com/?submit.633486
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

mmmsssttt (VulDB User)
JSON
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