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CVE-2023-43646— Inefficient Regular Expression Complexity in get-func-name

Quick assessment

Affected
chaijs get-func-name
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

get-func-name是Chaijs开源的一个在 NodeJS 和浏览器中安全一致地检索函数名称的模块。 get-func-name 2.0.1 之前版本存在安全漏洞，该漏洞源于系统存在正则表达式拒绝服务 (redos) 漏洞，可能在解析恶意输入时导致拒绝服务。

CVSS 8.6 · High EPSS 1.38% · P72

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2023-43646

Vulnerability Information
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Vulnerability Title
Inefficient Regular Expression Complexity in get-func-name
Source: CVE Program / CVE List V5
Vulnerability Description
get-func-name is a module to retrieve a function's name securely and consistently both in NodeJS and the browser. Versions prior to 2.0.1 are subject to a regular expression denial of service (redos) vulnerability which may lead to a denial of service when parsing malicious input. This vulnerability can be exploited when there is an imbalance in parentheses, which results in excessive backtracking and subsequently increases the CPU load and processing time significantly. This vulnerability can be triggered using the following input: '\t'.repeat(54773) + '\t/function/i'. This issue has been addressed in commit `f934b228b` which has been included in releases from 2.0.1. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
get-func-name 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
get-func-name是Chaijs开源的一个在 NodeJS 和浏览器中安全一致地检索函数名称的模块。 get-func-name 2.0.1 之前版本存在安全漏洞，该漏洞源于系统存在正则表达式拒绝服务 (redos) 漏洞，可能在解析恶意输入时导致拒绝服务。
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
chaijs get-func-name < 2.0.1 -

II. Public POCs for CVE-2023-43646

# POC Description Source Link Shenlong Link
1 redos https://github.com/200101WhoAmI/CVE-2023-43646 POC Details
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Qwen3.6-35B-A3B · 9510 chars
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III. Intelligence Information for CVE-2023-43646

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Patches & Fixes for CVE-2023-43646 (1)

Vendor Advisories for CVE-2023-43646 (1)

IV. Related Vulnerabilities

Same weakness: CWE-400