CVE-2026-2739

MEDIUM EPSS 37.0%
Published Feb 20, 20264mo ago · Modified Jun 17, 20262w ago
5.5 CVSS 4.0
Medium
Find Similar
Published Feb 20, 2026 4mo ago
Last Modified Jun 17, 2026 2w ago

Description

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 Details

Base Score
5.5
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
37.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-835

References 6

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.