CVE-2025-9308

4.8 mediumEPSS 0.2%

A vulnerability has been found in yarnpkg Yarn up to 1.22.22. This impacts the function setOptions of the file src/util/request-manager.js. Such manipulation leads to inefficient regular expression complexity. Local access is required to approach this attack. This vulnerability only affects products that are no longer supported by the maintainer.

Severity

CVSS 4.0

4.8 medium

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS 3.1

5.5 medium

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

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 11% of CVEs (scores of 2026-10-31)
CWEs: CWE-1333, CWE-400
Published: 2025-08-21
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

yarnpkg:yarn

References

https://github.com/yarnpkg/yarn/pull/9203
https://vuldb.com/?ctiid.320913
https://vuldb.com/?id.320913
https://vuldb.com/?submit.633486
https://github.com/yarnpkg/yarn/pull/9203

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