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CVE-2026-34243— wenxian: Command Injection in GitHub Actions Workflow via `issue_comment.body`

Quick assessment

Affected
njzjz wenxian
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.

wenxian是Jinzhe Zeng个人开发者的一个根据文献标识生成引用格式的工具。 wenxian 0.3.1及之前版本存在操作系统命令注入漏洞，该漏洞源于GitHub Actions工作流直接使用未经验证的用户输入执行shell命令，可能导致命令注入和任意代码执行。

CVSS 9.8 · Critical EPSS 2.78% · P86

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2026-34243

Vulnerability Information
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Vulnerability Title
wenxian: Command Injection in GitHub Actions Workflow via `issue_comment.body`
Source: CVE Program / CVE List V5
Vulnerability Description
wenxian is a tool to generate BIBTEX files from given identifiers (DOI, PMID, arXiv ID, or paper title). In versions 0.3.1 and prior, a GitHub Actions workflow uses untrusted user input from issue_comment.body directly inside a shell command, allowing potential command injection and arbitrary code execution on the runner. At time of publication, there are no publicly available patches.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
wenxian 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
wenxian是Jinzhe Zeng个人开发者的一个根据文献标识生成引用格式的工具。 wenxian 0.3.1及之前版本存在操作系统命令注入漏洞，该漏洞源于GitHub Actions工作流直接使用未经验证的用户输入执行shell命令，可能导致命令注入和任意代码执行。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
njzjz wenxian <= 0.3.1 -

II. Public POCs for CVE-2026-34243

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III. Intelligence Information for CVE-2026-34243

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Vendor Advisories for CVE-2026-34243 (1)

IV. Related Vulnerabilities

Same weakness: CWE-77

V. Comments for CVE-2026-34243

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