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CVE-2026-73336— Joomla! Core - [20260806] - XSS through schema.org outputs in Joomla 5.1.0-5.4.7, 6.0.0-6.1.2

CVSS 5.1 · Medium EPSS 0.32% · P24

Possible ATT&CK Techniques 1AI

T1189 · Drive-by Compromise

Affected Version Matrix 2

VendorProductVersion RangeStatus
Joomla! ProjectJoomla! CMS5.1.0-5.4.6affected
6.0.0-6.1.2affected
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I. Basic Information for CVE-2026-73336

Vulnerability Information
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Vulnerability Title
Joomla! Core - [20260806] - XSS through schema.org outputs in Joomla 5.1.0-5.4.7, 6.0.0-6.1.2
Source: CVE Program / CVE List V5
Vulnerability Description
Joomla! Core - [20260806] - XSS through schema.org outputs in Joomla 5.1.0-5.4.7, 6.0.0-6.1.2 - Improper escaping flags lead to an XSS vector in schema.org markup outputs.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Joomla! CMS 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Joomla! CMS是Joomla!组织开源的一个内容管理系统。 Joomla! CMS 5.1.0版本至5.4.6版本和6.0.0版本至6.1.2版本存在跨站脚本漏洞，该漏洞源于转义标志不当，可能导致schema.org标记输出中存在跨站脚本向量。
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

VendorProductAffected VersionsCPESubscribe
Joomla! ProjectJoomla! CMS 5.1.0-5.4.6 -

II. Public POCs for CVE-2026-73336

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III. Intelligence Information for CVE-2026-73336

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Vendor Advisories for CVE-2026-73336 (1)

Vendor Pages for CVE-2026-73336 (1)

Same Patch Batch · Joomla! Project · 2026-08-18 · 10 CVEs total

CVE-2026-733738.9 HIGHJoomla! Core - [20260810] - Unrestricted uploads of SHTML files in Joomla 1.0.0-5.4.7, 6.0
CVE-2026-715748.5 HIGHJoomla! Core - [20260803] - Inconsistent ACL checks for mutating webservice endpoints in J
CVE-2026-733378.2 HIGHJoomla! Core - [20260807] - MFA Authentication Bypass in Joomla 4.0.0-5.4.7 and 6.0.0-6.1.
CVE-2026-715736.9 MEDIUMJoomla! Core - [20260802] - Improper CORS origin validation in Joomla 4.0.0-5.4.7, 6.0.0-6
CVE-2026-725315.1 MEDIUMJoomla! Core - [20260804] - Improper ACL checks for custom fields webservice endpoints in
CVE-2026-725325.1 MEDIUMJoomla! Core - [20260805] - Improper ACL checks for category webservice endpoints in Jooml
CVE-2026-733725.1 MEDIUMJoomla! Core - [20260809] - Improper ACL checks when injection schema.org contact data in
CVE-2026-733715.1 MEDIUMJoomla! Core - [20260808] - Improper ACL checks for batch copy actions in Joomla 4.0.0-5.4
CVE-2026-715724.8 MEDIUMJoomla! Core - [20260801] - Response header injection in download views in Joomla 3.0.0-5.

IV. Related Vulnerabilities

Same product: Joomla! CMS
Same vendor: Joomla! Project
Same weakness: CWE-79

V. Comments for CVE-2026-73336

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