CVE-2026-27903
minimatch has a ReDoS: matchOne() combinatorial backtracking via multiple non-adjacent GLOBSTAR segments
Description
minimatch is a minimal matching utility for converting glob expressions into JavaScript RegExp objects. Prior to version 10.2.3, 9.0.7, 8.0.6, 7.4.8, 6.2.2, 5.1.8, 4.2.5, and 3.1.3, `matchOne()` performs unbounded recursive backtracking when a glob pattern contains multiple non-adjacent `**` (GLOBSTAR) segments and the input path does not match. The time complexity is O(C(n, k)) -- binomial -- where `n` is the number of path segments and `k` is the number of globstars. With k=11 and n=30, a call to the default `minimatch()` API stalls for roughly 5 seconds. With k=13, it exceeds 15 seconds. No memoization or call budget exists to bound this behavior. Any application where an attacker can influence the glob pattern passed to `minimatch()` is vulnerable. The realistic attack surface includes build tools and task runners that accept user-supplied glob arguments (ESLint, Webpack, Rollup config), multi-tenant systems where one tenant configures glob-based rules that run in a shared process, admin or developer interfaces that accept ignore-rule or filter configuration as globs, and CI/CD pipelines that evaluate user-submitted config files containing glob patterns. An attacker who can place a crafted pattern into any of these paths can stall the Node.js event loop for tens of seconds per invocation. The pattern is 56 bytes for a 5-second stall and does not require authentication in contexts where pattern input is part of the feature. Versions 10.2.3, 9.0.7, 8.0.6, 7.4.8, 6.2.2, 5.1.8, 4.2.5, and 3.1.3 fix the issue.
INFO
Published Date :
Feb. 26, 2026, 2:16 a.m.
Last Modified :
Feb. 27, 2026, 5:21 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update minimatch to version 10.2.3 or later.
- Update minimatch to version 9.0.7 or later.
- Update minimatch to version 8.0.6 or later.
- Update minimatch to the latest patched version.
Public PoC/Exploit Available at Github
CVE-2026-27903 has a 6 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-27903.
| URL | Resource |
|---|---|
| https://github.com/isaacs/minimatch/security/advisories/GHSA-7r86-cg39-jmmj | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-27903 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-27903
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-27903 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-27903 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Feb. 27, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:minimatch_project:minimatch:*:*:*:*:*:node.js:*:* versions from (including) 10.0.0 up to (excluding) 10.2.3 *cpe:2.3:a:minimatch_project:minimatch:*:*:*:*:*:node.js:*:* versions from (including) 4.0.0 up to (excluding) 4.2.5 *cpe:2.3:a:minimatch_project:minimatch:*:*:*:*:*:node.js:*:* versions from (including) 5.0.0 up to (excluding) 5.1.8 *cpe:2.3:a:minimatch_project:minimatch:*:*:*:*:*:node.js:*:* versions from (including) 6.0.0 up to (excluding) 6.2.2 *cpe:2.3:a:minimatch_project:minimatch:*:*:*:*:*:node.js:*:* versions from (including) 7.0.0 up to (excluding) 7.4.8 *cpe:2.3:a:minimatch_project:minimatch:*:*:*:*:*:node.js:*:* versions from (including) 8.0.0 up to (excluding) 8.0.6 *cpe:2.3:a:minimatch_project:minimatch:*:*:*:*:*:node.js:*:* versions from (including) 9.0.0 up to (excluding) 9.0.7 *cpe:2.3:a:minimatch_project:minimatch:*:*:*:*:*:node.js:*:* versions up to (excluding) 3.1.3 Added Reference Type GitHub, Inc.: https://github.com/isaacs/minimatch/security/advisories/GHSA-7r86-cg39-jmmj Types: Exploit, Vendor Advisory -
New CVE Received by [email protected]
Feb. 26, 2026
Action Type Old Value New Value Added Description minimatch is a minimal matching utility for converting glob expressions into JavaScript RegExp objects. Prior to version 10.2.3, 9.0.7, 8.0.6, 7.4.8, 6.2.2, 5.1.8, 4.2.5, and 3.1.3, `matchOne()` performs unbounded recursive backtracking when a glob pattern contains multiple non-adjacent `**` (GLOBSTAR) segments and the input path does not match. The time complexity is O(C(n, k)) -- binomial -- where `n` is the number of path segments and `k` is the number of globstars. With k=11 and n=30, a call to the default `minimatch()` API stalls for roughly 5 seconds. With k=13, it exceeds 15 seconds. No memoization or call budget exists to bound this behavior. Any application where an attacker can influence the glob pattern passed to `minimatch()` is vulnerable. The realistic attack surface includes build tools and task runners that accept user-supplied glob arguments (ESLint, Webpack, Rollup config), multi-tenant systems where one tenant configures glob-based rules that run in a shared process, admin or developer interfaces that accept ignore-rule or filter configuration as globs, and CI/CD pipelines that evaluate user-submitted config files containing glob patterns. An attacker who can place a crafted pattern into any of these paths can stall the Node.js event loop for tens of seconds per invocation. The pattern is 56 bytes for a 5-second stall and does not require authentication in contexts where pattern input is part of the feature. Versions 10.2.3, 9.0.7, 8.0.6, 7.4.8, 6.2.2, 5.1.8, 4.2.5, and 3.1.3 fix the issue. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-407 Added Reference https://github.com/isaacs/minimatch/security/advisories/GHSA-7r86-cg39-jmmj