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.
Published: 2026-10-19
Score: 8.7 High
EPSS: n/a
KEV: No
AI Analysis

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Remediation

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Tracking

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Advisories

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History

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'}


Subscriptions

Jonschlinkert Picomatch
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 : Received

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

Modified: 2026-10-19T17:17:16.010

Link: CVE-2026-112366

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-19T16:45:16Z

Weaknesses
  • CWE-1333

    Inefficient Regular Expression Complexity