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CVE-2022-50939— e107 CMS v3.2.1 - Upload Restriction Bypass with Path Traversal File Override

Quick assessment

Affected
E107 e107 CMS
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.

e107是E107团队的一套开源、免费且基于PHP和MySQL的内容管理系统（CMS）。该系统支持多种插件和外观主题，可作为个人博客、讨论社区、档案资料库等。 e107 3.2.1版本存在代码问题漏洞，该漏洞源于文件上传功能存在路径遍历，可能导致经过身份验证的管理员覆盖任意服务器文件。

CVSS 7.2 · High EPSS 1.26% · P69
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I. Basic Information for CVE-2022-50939

Vulnerability Information
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Vulnerability Title
e107 CMS v3.2.1 - Upload Restriction Bypass with Path Traversal File Override
Source: CVE Program / CVE List V5
Vulnerability Description
e107 CMS version 3.2.1 contains a critical file upload vulnerability that allows authenticated administrators to override arbitrary server files through path traversal. The vulnerability exists in the Media Manager's remote URL upload functionality (image.php) where the upload_caption parameter is not properly sanitized. An attacker with administrative privileges can use directory traversal sequences (../../../) in the upload_caption field to overwrite critical system files outside the intended upload directory. This can lead to complete compromise of the web application by overwriting configuration files, executable scripts, or other critical system components. The vulnerability was discovered by Hubert Wojciechowski and affects the image.php component in the admin interface.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
e107 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
e107是E107团队的一套开源、免费且基于PHP和MySQL的内容管理系统（CMS）。该系统支持多种插件和外观主题，可作为个人博客、讨论社区、档案资料库等。 e107 3.2.1版本存在代码问题漏洞，该漏洞源于文件上传功能存在路径遍历，可能导致经过身份验证的管理员覆盖任意服务器文件。
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
E107 e107 CMS 3.2.1 -

II. Public POCs for CVE-2022-50939

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III. Intelligence Information for CVE-2022-50939

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Vendor Advisories for CVE-2022-50939 (1)

Exploits & Public PoCs for CVE-2022-50939 (1)

Same Patch Batch · E107 · 2026-01-13 · 5 CVEs total

CVE-2022-50905 9.8 CRITICAL e107 CMS v3.2.1 - Reflected XSS via Comment Flow
CVE-2022-50916 7.2 HIGH e107 CMS v3.2.1 - Upload restriction bypass (Authenticated [Admin])+ Server file override
CVE-2022-50907 7.2 HIGH e107 CMS v3.2.1 - Admin Upload Restriction Bypass + RCE
CVE-2022-50906 4.8 MEDIUM e107 CMS v3.2.1 - Admin Upload Restriction Bypass + Stored XSS

IV. Related Vulnerabilities

Same product: e107 CMS
Same vendor: E107
Same weakness: CWE-22

V. Comments for CVE-2022-50939

Anonymous User
2026-01-15 06:08:46

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