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.

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bn.js affected by an infinite loop

This affects versions of the package bn.js before 4.12.3 and 5.2.3. Calling maskn0 on any BN instance corrupts the internal state, causing toString, divmod, and other methods to enter an infinite loop, hanging the process indefinitely...

CVE-2026-2739

CVE-2026-2739 affects bn.js versions before 5.2.3. Calling maskn(0) on any BN instance corrupts internal state, causing toString(), divmod(), and related methods to enter an infinite loop and hang the process. The Snyk/NVD/CVE listings confirm the impact and provide examples; the recommended reme...