isaacs minimatch up to 10.2.2 matchOne algorithmic complexity

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in isaacs minimatch up to 10.2.2. This affects the function matchOne. Performing a manipulation results in algorithmic complexity. This vulnerability was named CVE-2026-27903. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in isaacs minimatch up to 10.2.2. This affects the function matchOne. The manipulation with an unknown input leads to a algorithmic complexity vulnerability. CWE is classifying the issue as CWE-407. An algorithm in a product has an inefficient worst-case computational complexity that may be detrimental to system performance and can be triggered by an attacker, typically using crafted manipulations that ensure that the worst case is being reached. This is going to have an impact on availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-27903 since 02/24/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 300455 (Linux Distros Unpatched Vulnerability : CVE-2026-27903), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 3.1.3, 4.2.5, 5.1.8, 6.2.2, 7.4.8, 8.0.6, 9.0.7 or 10.2.3 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (300455) and CERT Bund (WID-SEC-2026-1220). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • IBM App Connect Enterprise

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (GitHub_M): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Algorithmic complexity
CWE: CWE-407 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 300455
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-27903

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: minimatch 3.1.3/4.2.5/5.1.8/6.2.2/7.4.8/8.0.6/9.0.7/10.2.3

Timelineinfo

02/24/2026 CVE reserved
02/26/2026 +2 days Advisory disclosed
02/26/2026 +0 days VulDB entry created
06/02/2026 +96 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-7r86-cg39-jmmj
Status: Confirmed

CVE: CVE-2026-27903 (🔒)
GCVE (CVE): GCVE-0-2026-27903
GCVE (VulDB): GCVE-100-347943
CERT Bund: WID-SEC-2026-1220 - IBM App Connect Enterprise: Mehrere Schwachstellen

Entryinfo

Created: 02/26/2026 07:25
Updated: 06/02/2026 06:39
Changes: 02/26/2026 07:25 (65), 03/05/2026 16:37 (2), 06/02/2026 06:39 (7)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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