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.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 20 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Important


Mon, 19 Oct 2026 20:00:00 +0000

Type Values Removed Values Added
First Time appeared Micromatch
Micromatch picomatch
Vendors & Products Micromatch
Micromatch picomatch

Mon, 19 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 19 Oct 2026 15:45:00 +0000

Type Values Removed Values Added
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.
Title Picomatch through 4.0.7 ReDoS via single-branch repeated extglob patterns
First Time appeared Jonschlinkert
Jonschlinkert picomatch
Weaknesses CWE-1333
CPEs cpe:2.3:a:jonschlinkert:picomatch:*:*:*:*:*:*:*:*
Vendors & Products Jonschlinkert
Jonschlinkert picomatch
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': '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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-19T16:40:19.321Z

Reserved: 2026-10-19T15:20:39.194Z

Link: CVE-2026-112366

cve-icon Vulnrichment

Updated: 2026-10-19T16:40:12.896Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-19T16:17:07.500

Modified: 2026-10-19T21:13:39.973

Link: CVE-2026-112366

cve-icon Redhat

Severity : Important

Publid Date: 2026-10-19T15:29:00Z

Links: CVE-2026-112366 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-19T19:45:02Z

Weaknesses