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CVE-2021-26030— [20210401] - Core - Escape xss in logo parameter error pages

Quick assessment

Affected
Joomla! Project Joomla! CMS
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Joomla是美国Open Source Matters团队的一套使用PHP和MySQL开发的开源、跨平台的内容管理系统(CMS)。 Joomla Core 存在安全漏洞，攻击者可利用该漏洞执行跨站点脚本（XSS）攻击。

AI Predicted 6.1 Difficulty: Easy EPSS 82.26% · P100
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I. Basic Information for CVE-2021-26030

Vulnerability Information
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Vulnerability Title
[20210401] - Core - Escape xss in logo parameter error pages
Source: CVE Program / CVE List V5
Vulnerability Description
An issue was discovered in Joomla! 3.0.0 through 3.9.25. Inadequate escaping allowed XSS attacks using the logo parameter of the default templates on error page
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Open Source Matters Joomla 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Joomla是美国Open Source Matters团队的一套使用PHP和MySQL开发的开源、跨平台的内容管理系统(CMS)。 Joomla Core 存在安全漏洞，攻击者可利用该漏洞执行跨站点脚本（XSS）攻击。
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
Joomla! Project Joomla! CMS 3.0.0-3.9.25 -

II. Public POCs for CVE-2021-26030

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III. Intelligence Information for CVE-2021-26030

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Other References for CVE-2021-26030 (1)

IV. Related Vulnerabilities

Same product: Joomla! CMS
Same vendor: Joomla! Project

V. Comments for CVE-2021-26030

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