Summaryinfo

A vulnerability was found in yarnpkg Yarn up to 1.22.22. It has been classified as problematic. Affected is the function setOptions of the file src/util/request-manager.js. Performing a manipulation results in redos. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability was named CVE-2025-9308. The attack needs to be approached locally. There is no available exploit. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Detailsinfo

A vulnerability classified as problematic has been found in yarnpkg Yarn up to 1.22.22. This affects the function setOptions of the file src/util/request-manager.js. The manipulation with an unknown input leads to a redos vulnerability. CWE is classifying the issue as CWE-1333. The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles. This is going to have an impact on availability.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2025-9308. The exploitability is told to be easy. An attack has to be approached locally. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1449.003 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 260189 (Linux Distros Unpatched Vulnerability : CVE-2025-9308), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (260189). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• yarnpkg

Name

• Yarn

Version

• 1.22.0
• 1.22.1
• 1.22.2
• 1.22.3
• 1.22.4
• 1.22.5
• 1.22.6
• 1.22.7
• 1.22.8
• 1.22.9
• 1.22.10
• 1.22.11
• 1.22.12
• 1.22.13
• 1.22.14
• 1.22.15
• 1.22.16
• 1.22.17
• 1.22.18
• 1.22.19
• 1.22.20
• 1.22.21
• 1.22.22

Support

• end of life

Website

• Product: https://github.com/yarnpkg/yarn/

CPE 2.3info

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CPE 2.2info

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Submitinfo

Accepted

• Submit #633486: yarn Yarn src/util/request-manager.js v1.22.22 Inefficient Regular Expression Complexity (by mmmsssttt)

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