CVE-2026-25547
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.
How to fix
- @isaacs/brace-expansion5.0.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| @isaacs/brace-expansionnpm | v < 5.0.1 | 5.0.1 |
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