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CVE-2026-77996— Joomla Extension - yootheme.com - Authenticated, privileged stored XSS in YOOtheme Pro 1.0.0-5.0.41

Quick assessment

Affected
yootheme.com YOOtheme Pro 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 扩展 - yootheme.com - 已认证的、具有特权的存储型跨站脚本攻击（XSS）存在于 YOOtheme Pro 1.0.0 至 5.0.41 版本中。由于位置自定义字段缺乏适当的转义处理，导致存在 XSS 攻击向量。

CVSS 7.5 · High EPSS 0.25% · P16

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise

Affected Version Matrix 1

VendorProduct Version RangeStatus
yootheme.com YOOtheme Pro extension for Joomla 1.0.0-5.0.41 affected
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I. Basic Information for CVE-2026-77996

Vulnerability Information
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Vulnerability Title
Joomla Extension - yootheme.com - Authenticated, privileged stored XSS in YOOtheme Pro 1.0.0-5.0.41
Source: CVE Program / CVE List V5
Vulnerability Description
Joomla Extension - yootheme.com - Authenticated, privileged stored XSS in YOOtheme Pro 1.0.0-5.0.41 - Lack of escaping in the location custom field lead to a XSS vector.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/S:N/AU: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

Affected Products

Vendor Product Affected Versions CPE Subscribe
yootheme.com YOOtheme Pro extension for Joomla 1.0.0-5.0.41 -

II. Public POCs for CVE-2026-77996

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III. Intelligence Information for CVE-2026-77996

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Vendor Pages for CVE-2026-77996 (1)

IV. Related Vulnerabilities

Same product: YOOtheme Pro extension for Joomla
Same vendor: yootheme.com
Same weakness: CWE-79

V. Comments for CVE-2026-77996

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