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CVE-2026-27904
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 3.1.4, nested "*()" extglobs produce regexps with nested unbounded quantifiers (e.g. "(?:(?:a|b)*)*"), which exhibit catastrophic backtracking in V8. With a 12-byte pattern "*(*(*(a|b)))" and an 18-byte non-matching input, "minimatch()" stalls for over 7 seconds. Adding a single nesting level or a few input characters pushes this to minutes. This is the most severe finding: it is triggered by the default "minimatch()" API with no special options, and the minimum viable pattern is only 12 bytes. The same issue affects "+()" extglobs equally. Versions 10.2.3, 9.0.7, 8.0.6, 7.4.8, 6.2.2, 5.1.8, 4.2.5, and 3.1.4 fix the issue.
Affected Packages
minimatch (NPM):
Affected version(s) >=0.0.1 <3.1.4
Fix Suggestion:
Update to version 3.1.4
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) >=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) >=4.0.0 <4.2.5
Fix Suggestion:
Update to version 4.2.5
minimatch (NPM):
Affected version(s) >=6.0.0 <6.2.2
Fix Suggestion:
Update to version 6.2.2
minimatch (NPM):
Affected version(s) >=9.0.0 <9.0.7
Fix Suggestion:
Update to version 9.0.7
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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 Regular Expression Complexity