Description
Joomla Extension - joomgalleryfriends.net - Stored XSS in JoomGallery < 4.4.0 - An authenticated, privileged can store an XSS payload in any image causing JS execution in every visitor's browser.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| joomgalleryfriends.net | JoomGallery extension for Joomla | 4.0.0-4.3.0 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
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toanln-cov/CVE-2026-66917 ★ 0 · Aug 23, 2026
IDOR + Stored XSS via Broken Object-Level Authorization in JoomGallery
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.