CVE-2026-27904
Description
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.
How to fix
- minimatch_project minimatch3.1.4, 4.2.5, 5.1.8, 6.2.2, 7.4.8, 8.0.6, 9.0.7, 10.2.3 or later
- minimatch10.2.3, 9.0.7, 8.0.6, 7.4.8, 6.2.2, 5.1.8, 4.2.5, 3.1.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| minimatch_project minimatch | v < 3.1.4, 4.0.0 ≤ v < 4.2.5, 5.0.0 ≤ v < 5.1.8, 6.0.0 ≤ v < 6.2.2, 7.0.0 ≤ v < 7.4.8, 8.0.0 ≤ v < 8.0.6, 9.0.0 ≤ v < 9.0.7, 10.0.0 ≤ v < 10.2.3 | 3.1.4, 4.2.5, 5.1.8, 6.2.2, 7.4.8, 8.0.6, 9.0.7, 10.2.3 |
| minimatchnpm | 10.0.0 ≤ v < 10.2.3, 9.0.0 ≤ v < 9.0.7, 8.0.0 ≤ v < 8.0.6, 7.0.0 ≤ v < 7.4.8, 6.0.0 ≤ v < 6.2.2, 5.0.0 ≤ v < 5.1.8, 4.0.0 ≤ v < 4.2.5, v < 3.1.4 | 10.2.3, 9.0.7, 8.0.6, 7.4.8, 6.2.2, 5.1.8, 4.2.5, 3.1.4 |
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