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I. Basic Information for CVE-2026-2739
Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
不可达退出条件的循环(无限循环)
Source: NVD (National Vulnerability Database)
Vulnerability Title
bn.js 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
bn.js是Fedor Indutny个人开发者的一个大数处理库。 bn.js 5.2.3之前版本存在安全漏洞,该漏洞源于在任何BN实例上调用maskn(0)会破坏内部状态,导致toString、divmod等方法进入无限循环,可能使进程无限期挂起。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
-bn.js 0 ~ 5.2.3 -
II. Public POCs for CVE-2026-2739
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III. Intelligence Information for CVE-2026-2739
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IV. Related Vulnerabilities
V. Comments for CVE-2026-2739

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