CVE Tools
Sign in

CVE-2026-25547

Uncontrolled Resource Consumption in @isaacs/brace-expansion

Published: Feb 4, 2026Updated: Feb 5, 2026 Sources: CVE List NVD GHSA BDUCWE-1333
NVD MITRE
8.6CVSSHIGH
EPSS Score
0.5%
Top 62.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

@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.

CVSS Vector Breakdown

AV:NAC:LC:NI:NA:H
Exploitability
AV:NAccess Vector
Network
AC:LAccess Complexity
Low
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
H
Open in CVSS calculator →

Weaknesses

CWE-1333

Affected Products

Node.jsNode.js FoundationOSS Libraries
brace-expansionСообщество свободного программного обеспечения
On-prem
Operating Systems / linux-distro
@isaacs/brace-expansionnpmOSS Libraries
brace-expansionisaacs
Library
OSS Libraries / npm
node.js foundationoss-projectUSOSS Librariesaka nodejs foundation, node foundation
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
npmpackage-ecosystemOSS Libraries
isaacsindividual-devOSS Librariesaka isaacs node packages, isaacs tar

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/isaacs/brace-expansion/security/advisories/GHSA-7h2j-956f-4vf2
github.com
https://nvd.nist.gov/vuln/detail/CVE-2026-25547
nvd.nist.gov
https://github.com/isaacs/brace-expansion
github.com

Timeline

Published
Feb 4, 2026
Last Updated
Feb 5, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-25547 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows