Vulnerability 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.
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-25547?
CVE-2026-25547 is a documented vulnerability. @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 bra...
How severe is CVE-2026-25547?
CVSS scoring is not yet available for CVE-2026-25547. Check NVD for updates.
Is there a patch for CVE-2026-25547?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.