CVE-2026-2739

This affects versions of the package bn.js before 5.2.3. Calling maskn(0) on any BN instance corrupts the internal state, causing toString(), divmod(), and other methods to enter an infinite loop, hanging the process indefinitely.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://gist.github.com/Kr0emer/02370d18328c28b5dd7f9ac880d22a91
https://github.com/indutny/bn.js/commit/33df26b5771e824f303a79ec6407409376baa64b
https://github.com/indutny/bn.js/issues/186
https://github.com/indutny/bn.js/issues/316
https://github.com/indutny/bn.js/pull/317
https://security.snyk.io/vuln/SNYK-JS-BNJS-15274301

Configurations

No configuration.

History

20 Feb 2026, 13:49

Type	Values Removed	Values Added
Summary		(es) Esto afecta a las versiones del paquete bn.js anteriores a la 5.2.3. Al llamar a maskn(0) en cualquier instancia de BN se corrompe el estado interno, lo que provoca que toString(), divmod() y otros métodos entren en un bucle infinito, bloqueando el proceso indefinidamente.

20 Feb 2026, 05:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-20 05:17

Updated : 2026-02-20 13:49

NVD link : CVE-2026-2739

Mitre link : CVE-2026-2739

CVE.ORG link : CVE-2026-2739

JSON object : View

Products Affected

No product.

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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