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CVE-2025-8262— yarnpkg Yarn hosted-git-resolver.js explodeHostedGitFragment redos

Quick assessment

Affected
yarnpkg Yarn
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Yarn是一款开源的软件包安装、管理工具。 Yarn 1.22.22及之前版本存在安全漏洞，该漏洞源于函数explodeHostedGitFragment会导致正则表达式的复杂性降低。

CVSS 4.3 · Medium EPSS 0.74% · P53

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2025-8262

Vulnerability Information
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Vulnerability Title
yarnpkg Yarn hosted-git-resolver.js explodeHostedGitFragment redos
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in yarnpkg Yarn up to 1.22.22. It has been classified as problematic. Affected is the function explodeHostedGitFragment of the file src/resolvers/exotics/hosted-git-resolver.js. The manipulation leads to inefficient regular expression complexity. It is possible to launch the attack remotely. The patch is identified as 97731871e674bf93bcbf29e9d3258da8685f3076. It is recommended to apply a patch to fix this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1333
Source: CVE Program / CVE List V5
Vulnerability Title
Yarn 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Yarn是一款开源的软件包安装、管理工具。 Yarn 1.22.22及之前版本存在安全漏洞，该漏洞源于函数explodeHostedGitFragment会导致正则表达式的复杂性降低。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
yarnpkg Yarn 1.22.0 -

II. Public POCs for CVE-2025-8262

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III. Intelligence Information for CVE-2025-8262

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IV. Related Vulnerabilities

Same product: Yarn
Same vendor: yarnpkg
Same weakness: CWE-1333

V. Comments for CVE-2025-8262

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