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CRITICALCVE-2026-25547Published Modified CNA GitHub_M

CVE-2026-25547: Uncontrolled Resource Consumption in @isaacs/brace-expansion

@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.

Metrics

CVSS v4.0
9.2
Severity
CRITICAL
Fixed in
Affected Products
1
Affected packages
  • isaacs / brace-expansion
    < 5.0.1
CVSS 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:H