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.
Advisories

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Fixes

Solution

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Workaround

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History

Fri, 20 Feb 2026 12:15:00 +0000

Type Values Removed Values Added
Title bn.js: bn.js: Denial of Service via calling maskn(0)
References
Metrics threat_severity

None

threat_severity

Moderate


Fri, 20 Feb 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Indutny
Indutny bn.js
Vendors & Products Indutny
Indutny bn.js

Fri, 20 Feb 2026 05:15:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-835
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P'}

cvssV4_0

{'score': 6.9, 'vector': '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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: snyk

Published:

Updated: 2026-02-20T15:03:53.743Z

Reserved: 2026-02-19T10:59:37.687Z

Link: CVE-2026-2739

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-20T05:17:53.033

Modified: 2026-02-20T13:49:47.623

Link: CVE-2026-2739

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-02-20T05:00:08Z

Links: CVE-2026-2739 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-02-20T09:52:40Z

Weaknesses