CVE-2026-112366
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.
- Score
- CVSS 4.0 8.7 High
- Status
- Awaiting Analysis - disclosure@vulncheck.com
- Published
- 2026-10-19
- Last modified
- 2026-10-19
- Weaknesses
- CWE-1333
Affected products
References
- https://github.com/micromatch/picomatch/pull/194
- https://github.com/micromatch/picomatch/blob/4.0.7/lib/parse.js#L287-L307
- https://www.vulncheck.com/advisories/picomatch-through-4.0.7-redos-via-single-branch-repeated-extglob-patterns