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CVE-2026-65891— Joomla Extension - joomlacontenteditor.net - Creation of hidden files and unintended file overwrite via rename function in Joomla Content Editor (JCE) < 2.9.99.10

Quick assessment

Affected
joomlacontenteditor.net Joomla Content Editor (JCE) extension for Joomla
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.

Joomla Content Editor Joomla Content Editor是Joomla Content Editor公司的一款内容编辑软件。 Joomla Content Editor 2.20.2之前版本存在输入验证错误漏洞，该漏洞源于文件重命名功能输入验证不当，允许具有文件管理权限的认证用户将文件重命名为无效名称，导致创建隐藏文件并可能覆盖目标路径中的现有文件。

AI Predicted 6.5 Difficulty: Easy EPSS 0.34% · P25

Affected Version Matrix 1

VendorProduct Version RangeStatus
joomlacontenteditor.net Joomla Content Editor (JCE) extension for Joomla 1.0.0-2.9.99.9 affected
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I. Basic Information for CVE-2026-65891

Vulnerability Information
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Vulnerability Title
Joomla Extension - joomlacontenteditor.net - Creation of hidden files and unintended file overwrite via rename function in Joomla Content Editor (JCE) < 2.9.99.10
Source: CVE Program / CVE List V5
Vulnerability Description
Joomla Extension - joomlacontenteditor.net - Creation of hidden files and unintended file overwrite via rename function in Joomla Content Editor (JCE) < 2.20.2 - Improper input validation in the file rename functionality allowed an authenticated user with file management permissions to rename files to otherwise invalid names, resulting in the creation of hidden files. The issue also allowed existing files at the destination path to be unintentionally replaced.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Joomla Content Editor 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Joomla Content Editor Joomla Content Editor是Joomla Content Editor公司的一款内容编辑软件。 Joomla Content Editor 2.20.2之前版本存在输入验证错误漏洞，该漏洞源于文件重命名功能输入验证不当，允许具有文件管理权限的认证用户将文件重命名为无效名称，导致创建隐藏文件并可能覆盖目标路径中的现有文件。
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
joomlacontenteditor.net Joomla Content Editor (JCE) extension for Joomla 1.0.0-2.9.99.9 -

II. Public POCs for CVE-2026-65891

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-65891

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Vendor Pages for CVE-2026-65891 (1)

IV. Related Vulnerabilities

Same product: Joomla Content Editor (JCE) extension for Joomla
Same vendor: joomlacontenteditor.net
Same weakness: CWE-20

V. Comments for CVE-2026-65891

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