isaacs brace-expansion up to 5.0.0 redos

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in isaacs brace-expansion up to 5.0.0. The impacted element is an unknown function. Such manipulation leads to redos. This vulnerability is referenced as CVE-2026-25547. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in isaacs brace-expansion up to 5.0.0. Affected by this issue is an unknown functionality. The manipulation with an unknown input leads to a redos vulnerability. Using CWE to declare the problem leads to CWE-1333. The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles. Impacted is availability. CVE summarizes:

@isaacs/brace-expansion is a hybrid CJS/ESM TypeScript fork of brace-expansion. Prior to version 5.0.1, @isaacs/brace-expansion is vulnerable to a denial of service (DoS) issue caused by unbounded brace range expansion. When an attacker provides a pattern containing repeated numeric brace ranges, the library attempts to eagerly generate every possible combination synchronously. Because the expansion grows exponentially, even a small input can consume excessive CPU and memory and may crash the Node.js process. This issue has been patched in version 5.0.1.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-25547 since 02/02/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1449.003 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 298173 (Linux Distros Unpatched Vulnerability : CVE-2026-25547), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.0.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (298173), EUVD (EUVD-2026-5326) and CERT Bund (WID-SEC-2026-0526). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • IBM App Connect Enterprise

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

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

CVSSv2info

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

Exploitinginfo

Class: Redos
CWE: CWE-1333 / CWE-400 / 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: 298173
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-25547

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: brace-expansion 5.0.1

Timelineinfo

02/02/2026 CVE reserved
02/05/2026 +3 days Advisory disclosed
02/05/2026 +0 days VulDB entry created
03/18/2026 +41 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-7h2j-956f-4vf2
Status: Confirmed

CVE: CVE-2026-25547 (🔒)
GCVE (CVE): GCVE-0-2026-25547
GCVE (VulDB): GCVE-100-344450
EUVD: 🔒
CERT Bund: WID-SEC-2026-0526 - IBM App Connect Enterprise: Mehrere Schwachstellen

Entryinfo

Created: 02/05/2026 07:52
Updated: 03/18/2026 17:52
Changes: 02/05/2026 07:52 (67), 02/05/2026 09:16 (1), 02/06/2026 11:40 (2), 03/18/2026 17:52 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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