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GHSA-378v-28hj-76wf

bn.js affected by an infinite loop

Source: GitHub Advisory Database (reviewed) Moderate CVE-2026-2739

Packages

EcosystemPackageAffectedFixed in
npm bn.js < 4.12.3 4.12.3
npm bn.js >= 5.0.0, < 5.2.3 5.2.3

Details

As written in the advisory (Markdown source, shown as plain text).

This affects versions of the package bn.js before 4.12.3 and 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.

References

External links from the advisory. They lead to third-party sites.