CVE-2026-13149

brace-expansion through 5.0.6 is vulnerable to denial of service. The expand() function exhibits exponential-time complexity in the number of consecutive non-expanding '{}' brace groups. An attacker who passes a crafted string to expand(), directly or transitively, can cause significant CPU consumption and event-loop blocking. The max option does not mitigate this, as it bounds the output size rather than the recursion work.

CVSS

No CVSS.

References

Link	Resource
https://github.com/juliangruber/brace-expansion/commit/c7e33ec13ac1a684c116720843ce24e208611754
https://www.npmjs.com/package/brace-expansion

Configurations

No configuration.

History

25 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) brace-expansion hasta la 5.0.6 es vulnerable a denegación de servicio. La función expand() presenta una complejidad de tiempo exponencial en el número de grupos de llaves ’{}’ consecutivos no expansibles. Un atacante que pasa una cadena manipulada a expand(), directa o transitivamente, puede causar un consumo significativo de CPU y el bloqueo del bucle de eventos. La opción max no mitiga esto, ya que limita el tamaño de la salida en lugar del trabajo de recursión.

Information

Published : 2026-06-30 10:16

Updated : 2026-10-25 21:10

NVD link : CVE-2026-13149

Mitre link : CVE-2026-13149

CVE.ORG link : CVE-2026-13149

JSON object : View

Products Affected

No product.

CWE

CWE-400

Uncontrolled Resource Consumption

CWE-407

Inefficient Algorithmic Complexity

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