CVE-2026-112366

HIGH 7.5

Picomatch through 4.0.7 ReDoS via single-branch repeated extglob patterns

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-1333
Vendor	micromatch
Product	picomatch
Published	Oct 19, 2026
Last Updated	Oct 19, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

micromatch / picomatch

0 ≤ 4.0.7

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/micromatch/picomatch/pull/194 github.com: https://github.com/micromatch/picomatch/blob/4.0.7/lib/parse.js#L287-L307 vulncheck.com: https://www.vulncheck.com/advisories/picomatch-through-4.0.7-redos-via-single-branch-repeated-extglob-patterns

Credits

maximilliangrand Zachariah Mithani