CVE-2026-112366
Picomatch through 4.0.7 ReDoS via single-branch repeated extglob patterns
- State
- Published
- Severity
- 8.7 High
- Published
- Oct 19, 2026
- Updated
- Oct 19, 2026
- Reserved
- Oct 19, 2026
Description
Picomatch through 4.0.7 contains a regular expression denial of service vulnerability that allows attackers to block the event loop by supplying single-branch repeated extglob patterns. Attackers can provide globs like +(*) or +(*a), which analyzeRepeatedExtglob in lib/parse.js skips, causing exponential backtracking against short crafted strings and denying service to Node.js applications.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-1333 Inefficient Regular Expression Complexity
Affected Products
| Product | Versions |
|---|---|
picomatchmicromatch |
|
References
- https://github.com/micromatch/picomatch/pull/194patchissue-tracking
- https://github.com/micromatch/picomatch/blob/4.0.7/lib/parse.js#L287-L307technical-description
- VulnCheck Advisory: Picomatch through 4.0.7 ReDoS via single-branch repeated extglob patternsthird-party-advisory
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