CVE-2026-44666— HRConvert2: Missing Sanitization enables Unauthenticated Remote Command Execution
Possible ATT&CK Techniques 2AI
T1059 · Command and Scripting Interpreter T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| zelon88 | HRConvert2 | < 3.3.8 | affected |
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I. Basic Information for CVE-2026-44666
Vulnerability Information
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Vulnerability Title
HRConvert2: Missing Sanitization enables Unauthenticated Remote Command Execution
Source: NVD (National Vulnerability Database)
Vulnerability Description
HRConvert2 is a self-hosted, drag-and-drop & nosql file conversion server & share tool. Prior to 3.3.8, the sanitizeString() function in convertCore.php is missing backtick (`) and tab (\t) from its strip list. User input then reaches shell_exec(), where the shell interprets these characters and commands within filenames execute. This vulnerability is fixed in 3.3.8.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
HRConvert2 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
HRConvert2是Justin Grimes个人开发者的一款自托管的拖拽式文件转换与共享工具。 HRConvert2 3.3.8之前版本存在操作系统命令注入漏洞，该漏洞源于sanitizeString函数未过滤反引号和制表符，导致用户输入通过shell_exec执行命令。
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 |
|---|---|---|---|---|
| zelon88 | HRConvert2 | < 3.3.8 | - |
II. Public POCs for CVE-2026-44666
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://github.com/zelon88/HRConvert2/releases/tag/v3.3.8x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-44666
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Same weakness: CWE-78
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V. Comments for CVE-2026-44666
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