GHSA-378v-28hj-76wfMediumCVSS 5.3

bn.js affected by an infinite loop

Published
February 20, 2026
Last Modified
February 24, 2026

🔗 CVE IDs covered (1)

CVE-2026-2739 →

📋 Description

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.

🎯 Affected products2

  • npm/bn.js:< 4.12.3
  • npm/bn.js:>= 5.0.0, < 5.2.3

🔗 References (10)