CVE-2026-2739
MEDIUM
5.3
CVSS Score
Published: February 20, 2026 at 05:00 AM UTC
Updated: June 17, 2026 at 10:31 AM UTC
1 product affected across 1 vendorBn.js
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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.5%
SSVC
PoC
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.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (6)
Source: cverecord
https://security.snyk.io/vuln/SNYK-JS-BNJS-15274301Source: cverecord
https://github.com/indutny/bn.js/issues/316Source: cverecord
https://github.com/indutny/bn.js/issues/186Source: cverecord
https://gist.github.com/Kr0emer/02370d18328c28b5dd7f9ac880d22a91Source: cverecord
https://github.com/indutny/bn.js/pull/317SSVC — Action Prioritization
SSVCPoCAutomatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
5.3MEDIUMsnyk
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- LOW
Vector?
Quick Info
StatusDEFERRED
CWE
CWE-835
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