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CVE-2026-45062— FrankenPHP: Unsafe Unicode Handling in CGI Path Splitting Allows Execution of Non-PHP Files

Quick assessment

Affected
php frankenphp
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.

FrankenPHP是phpnet开源的一个PHP应用服务器。 FrankenPHP 1.11.2版本至1.2.3之前版本存在输入验证错误漏洞，该漏洞源于cgi.go中的splitPos()函数在请求路径包含非ASCII字节时错误使用search.IgnoreCase，可能导致攻击者将非.php文件视为.php脚本处理，进而升级为远程代码执行。

CVSS 8.1 · High EPSS 0.75% · P54

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
php frankenphp >= 1.11.2, < 1.12.3 affected
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I. Basic Information for CVE-2026-45062

Vulnerability Information
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Vulnerability Title
FrankenPHP: Unsafe Unicode Handling in CGI Path Splitting Allows Execution of Non-PHP Files
Source: CVE Program / CVE List V5
Vulnerability Description
FrankenPHP is a modern application server for PHP. From version 1.11.2 to before version 1.12.3, the splitPos() function in cgi.go misuses golang.org/x/text/search with search.IgnoreCase when the request path contains a non-ASCII byte. Two distinct flaws in that fallback let an attacker mislead FrankenPHP into treating a non-.php file as a .php script. In any deployment where the attacker can place content into a file served by FrankenPHP (uploads, file storage, etc.), this can be escalated to remote code execution by crafting a URL whose path triggers either flaw. This issue has been patched in version 1.12.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
FrankenPHP 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FrankenPHP是phpnet开源的一个PHP应用服务器。 FrankenPHP 1.11.2版本至1.2.3之前版本存在输入验证错误漏洞，该漏洞源于cgi.go中的splitPos()函数在请求路径包含非ASCII字节时错误使用search.IgnoreCase，可能导致攻击者将非.php文件视为.php脚本处理，进而升级为远程代码执行。
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)

Affected Products

Vendor Product Affected Versions CPE Subscribe
php frankenphp >= 1.11.2, < 1.12.3 -

II. Public POCs for CVE-2026-45062

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 7808 chars
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III. Intelligence Information for CVE-2026-45062

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Patches & Fixes for CVE-2026-45062 (1)

Vendor Advisories for CVE-2026-45062 (1)

IV. Related Vulnerabilities

Same product: frankenphp
Same vendor: php
Same weakness: CWE-20

V. Comments for CVE-2026-45062

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