AUGUST 4, 2026
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Case File

CVE-2026-2739

MEDIUM · CVSS 5.3 EPSS 0.47% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-02-20 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.3. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links
gist.github.com ↗ github.com ↗ github.com ↗ github.com ↗ github.com ↗

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-2739
Severity
MEDIUM
CVSS
5.3
EPSS
0.47%

Original NVD 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.