Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-2739

Quick assessment

Affected
n/a bn.js
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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。

CVSS 5.3 · Medium EPSS 0.60% · P47

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-2739

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
N/A
Source: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
不可达退出条件的循环(无限循环)
Source: CVE Program / CVE List V5
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

Vendor Product Affected Versions CPE Subscribe
- bn.js 0 ~ 5.2.3 -

II. Public POCs for CVE-2026-2739

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-2739

请登录查看更多情报信息。

News Coverage for CVE-2026-2739 (1)

Other References for CVE-2026-2739 (1)

Same Patch Batch · n/a · 2026-02-20 · 13 CVEs total

CVE-2026-2822 6.3 MEDIUM JeecgBoot Backend airag_app,1,create_by sql injection
CVE-2026-26747 Monica 安全漏洞
CVE-2026-26721 Key Systems Global Facilities Management Software 安全漏洞
CVE-2026-26745 opensourcepos 安全漏洞
CVE-2026-26724 Key Systems Global Facilities Management Software 安全漏洞
CVE-2026-26725 edu Business Solutions Print Shop Pro WebDesk 安全漏洞
CVE-2026-26722 Key Systems Global Facilities Management Software 安全漏洞
CVE-2026-26746 opensourcepos 安全漏洞
CVE-2026-26723 Key Systems Global Facilities Management Software 安全漏洞
CVE-2025-70833 Smanga 安全漏洞
CVE-2025-70831 Smanga 安全漏洞
CVE-2025-67438 Sync in 安全漏洞

IV. Related Vulnerabilities

Same vendor: n/a
Same weakness: CWE-835

V. Comments for CVE-2026-2739

No comments yet

Leave a comment