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CVE-2026-27903
February 26, 2026
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.
Affected Packages
https://github.com/isaacs/minimatch.git (GITHUB):
Affected version(s) >=v8.0.0 <v8.0.6
Fix Suggestion:
Update to version v8.0.6
https://github.com/isaacs/minimatch.git (GITHUB):
Affected version(s) >=v6.0.0 <v6.2.2
Fix Suggestion:
Update to version v6.2.2
https://github.com/isaacs/minimatch.git (GITHUB):
Affected version(s) >=v10.0.0 <v10.2.3
Fix Suggestion:
Update to version v10.2.3
https://github.com/isaacs/minimatch.git (GITHUB):
Affected version(s) >=v9.0.0 <v9.0.7
Fix Suggestion:
Update to version v9.0.7
https://github.com/isaacs/minimatch.git (GITHUB):
Affected version(s) >=v0.0.1 <v3.1.3
Fix Suggestion:
Update to version v3.1.3
https://github.com/isaacs/minimatch.git (GITHUB):
Affected version(s) >=v7.0.0 <v7.4.8
Fix Suggestion:
Update to version v7.4.8
https://github.com/isaacs/minimatch.git (GITHUB):
Affected version(s) >=v5.0.0 <v5.1.8
Fix Suggestion:
Update to version v5.1.8
https://github.com/isaacs/minimatch.git (GITHUB):
Affected version(s) >=v4.0.0 <v4.2.5
Fix Suggestion:
Update to version v4.2.5
minimatch (NPM):
Affected version(s) >=9.0.0 <9.0.7
Fix Suggestion:
Update to version 9.0.7
minimatch (NPM):
Affected version(s) >=10.0.0 <10.2.3
Fix Suggestion:
Update to version 10.2.3
minimatch (NPM):
Affected version(s) >=7.0.0 <7.4.8
Fix Suggestion:
Update to version 7.4.8
minimatch (NPM):
Affected version(s) >=5.0.0 <5.1.8
Fix Suggestion:
Update to version 5.1.8
minimatch (NPM):
Affected version(s) >=8.0.0 <8.0.6
Fix Suggestion:
Update to version 8.0.6
minimatch (NPM):
Affected version(s) >=0.0.1 <3.1.3
Fix Suggestion:
Update to version 3.1.3
minimatch (NPM):
Affected version(s) >=6.0.0 <6.2.2
Fix Suggestion:
Update to version 6.2.2
minimatch (NPM):
Affected version(s) >=4.0.0 <4.2.5
Fix Suggestion:
Update to version 4.2.5
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CVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Inefficient Algorithmic Complexity