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.
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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-10-19T15:29:00.491Z

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