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CVE-2026-77028— Joomla Extension - yootheme.com - Reflected XSS and open redirect via the submission redirect parameter in Zoo < 4.1.66

Quick assessment

Affected
yootheme.com Zoo 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 - Zoo 版本低于 4.1.66 时，通过提交重定向参数可导致反射型XSS和开放重定向漏洞

CVSS 5.3 · Medium EPSS 0.24% · P15

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise

Affected Version Matrix 1

VendorProduct Version RangeStatus
yootheme.com Zoo extension for Joomla 1.0.0-4.1.65 affected
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I. Basic Information for CVE-2026-77028

Vulnerability Information
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Vulnerability Title
Joomla Extension - yootheme.com - Reflected XSS and open redirect via the submission redirect parameter in Zoo < 4.1.66
Source: CVE Program / CVE List V5
Vulnerability Description
Joomla Extension - yootheme.com - Reflected XSS and open redirect via the submission redirect parameter in Zoo < 4.1.66
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/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

Affected Products

Vendor Product Affected Versions CPE Subscribe
yootheme.com Zoo extension for Joomla 1.0.0-4.1.65 -

II. Public POCs for CVE-2026-77028

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-77028

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Vendor Pages for CVE-2026-77028 (1)

Same Patch Batch · yootheme.com · 2026-08-21 · 6 CVEs total

CVE-2026-76613 8.6 HIGH Joomla Extension - yootheme.com - Authenticated, privileged SQL injection in YOOtheme Pro
CVE-2026-76612 8.6 HIGH Joomla Extension - yootheme.com - Unauthenticated stored XSS via user-controlled fields in
CVE-2026-75115 7.0 HIGH Joomla Extension - yootheme.com - Authenticated, privileged arbitrary file read in YOOthem
CVE-2026-76611 6.9 MEDIUM Joomla Extension - yootheme.com - Unauthenticated arbitrary directory listing via the Gall
CVE-2026-77029 4.6 MEDIUM Joomla Extension - yootheme.com - Missing CSRF tokens on front-end state changes in Zoo <

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-77028

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