CVE-2026-27904 (GCVE-0-2026-27904)

Vulnerability from cvelistv5 – Published: 2026-02-26 01:07 – Updated: 2026-02-26 19:21
VLAI
Title
minimatch ReDoS: nested *() extglobs generate catastrophically backtracking regular expressions
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
Vendor Product Version
isaacs minimatch Affected: >= 10.0.0, < 10.2.3
Affected: >= 9.0.0, < 9.0.7
Affected: >= 8.0.0, < 8.0.6
Affected: >= 7.0.0, < 7.4.8
Affected: >= 6.0.0, < 6.2.2
Affected: >= 5.0.0, < 5.1.8
Affected: >= 4.0.0, < 4.2.5
Affected: < 3.1.4
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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