CVE-2026-50182 AVideo Has Unauthenticated Reflected XSS via $_GET['search'] in YouTubeAPI Gallery Pagination
Unauthenticated attackers can execute arbitrary JavaScript via reflected XSS in AVideo, potentially leading to full administrative takeover if the victim is an admin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-50182?
CVE-2026-50182 is a medium-severity cross-site scripting vulnerability in WWBN AVideo, published on 15 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
WWBN AVideo is an open source video platform. Versions prior to 29.0 contain an unauthenticated Reflected XSS vulnerability through AVideo YouTubeAPI Gallery Pagination. The $_GET['search'] query parameter is concatenated directly into the href attribute of two pagination links in plugin/YouTubeAPI/gallerySection.php (lines 67 and 74) with no htmlspecialchars, no urlencode, and no allow-list check. An injected <script> element is then extracted by the AVideo Layout plugin and concatenated into a single trailing inline script block at the bottom of the page, where the browser executes it. Any unauthenticated attacker can lure a victim into following a crafted URL to execute arbitrary JavaScript under the AVideo origin, which can read non-HttpOnly cookies and issue authenticated AJAX requests as the victim, and when the victim is an administrator, it can perform any cookie-authenticated admin action (create user, promote to admin, change configuration, install plugin), escalating a single click into full administrative takeover. This issue has been patched by this commit: https://github.com/WWBN/AVideo/commit/f50fc033b7adb36f1ffd6640e7826468bdafdec3.
Weakness: CWE-79
Which versions are affected by CVE-2026-50182?
2 open source packages ship an affected version, including WWBN/AVideo.
| Package | Affected | Fixed in |
|---|---|---|
WWBN/AVideo Packagist | All versions to 29.0 | None |
WWBN/AVideo Packagist | All versions to 29.0 | None |
How do I fix CVE-2026-50182?
No fix has been published for CVE-2026-50182 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-50182 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-50182 exists.
Sources
Also known as GHSA-hgjh-6wj8-gcgf.