CVE-2026-27903 (High) detected in minimatch-3.1.2.tgz

[mend-bolt-for-github]

CVE-2026-27903 - High Severity Vulnerability

Vulnerable Library - minimatch-3.1.2.tgz

a glob matcher in javascript

Library home page: https://registry.npmjs.org/minimatch/-/minimatch-3.1.2.tgz

Path to dependency file: /package.json

Path to vulnerable library: /node_modules/minimatch/package.json

Dependency Hierarchy:

• electron-rebuild-1.11.0.tgz (Root Library)
  • node-gyp-6.1.0.tgz
    • glob-7.2.3.tgz
      • ❌ minimatch-3.1.2.tgz (Vulnerable Library)

Found in HEAD commit: ae62db6079d7852a74ec7949f57fe5a5bbcbe2a7

Found in base branch: master

Vulnerability Details

minimatch is a minimal matching utility for converting glob expressions into JavaScript RegExp objects. Prior to version 10.2.3, 9.0.7, 8.0.6, 7.4.8, 6.2.2, 5.1.8, 4.2.5, and 3.1.3, "matchOne()" performs unbounded recursive backtracking when a glob pattern contains multiple non-adjacent "**" (GLOBSTAR) segments and the input path does not match. The time complexity is O(C(n, k)) -- binomial -- where "n" is the number of path segments and "k" is the number of globstars. With k=11 and n=30, a call to the default "minimatch()" API stalls for roughly 5 seconds. With k=13, it exceeds 15 seconds. No memoization or call budget exists to bound this behavior. Any application where an attacker can influence the glob pattern passed to "minimatch()" is vulnerable. The realistic attack surface includes build tools and task runners that accept user-supplied glob arguments (ESLint, Webpack, Rollup config), multi-tenant systems where one tenant configures glob-based rules that run in a shared process, admin or developer interfaces that accept ignore-rule or filter configuration as globs, and CI/CD pipelines that evaluate user-submitted config files containing glob patterns. An attacker who can place a crafted pattern into any of these paths can stall the Node.js event loop for tens of seconds per invocation. The pattern is 56 bytes for a 5-second stall and does not require authentication in contexts where pattern input is part of the feature. Versions 10.2.3, 9.0.7, 8.0.6, 7.4.8, 6.2.2, 5.1.8, 4.2.5, and 3.1.3 fix the issue.

Publish Date: 2026-02-26

URL: CVE-2026-27903

CVSS 3 Score Details (7.5)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: GHSA-7r86-cg39-jmmj

Release Date: 2026-02-26

Fix Resolution: https://github.com/isaacs/minimatch.git - v3.1.3,https://github.com/isaacs/minimatch.git - v8.0.6,https://github.com/isaacs/minimatch.git - v10.2.3,https://github.com/isaacs/minimatch.git - v5.1.8,https://github.com/isaacs/minimatch.git - v7.4.8,https://github.com/isaacs/minimatch.git - v4.2.5,https://github.com/isaacs/minimatch.git - v9.0.7,https://github.com/isaacs/minimatch.git - v6.2.2

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