CVE-2026-89247 WWBN AVideo XML Injection via plugin/AD_Server/VMAP.php
Remote attackers can inject malicious XML into video ads via unauthenticated requests, potentially leading to code execution or data theft.
- 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-2026-89247?
CVE-2026-89247 is a medium-severity vulnerability in WWBN AVideo, published on 11 Sep 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 at commit c3edcc274c389816d434acadac07ee78eaf330c1 and earlier contains an XML injection vulnerability in plugin/AD_Server/VMAP.php, which is reachable without authentication when the AD_Server plugin is enabled. The script emits Content-Type: application/xml and writes the timeOffset and idTag values returned by AD_Server::getVMAPSFromRequest() directly into VMAP attributes without encoding. Those values originate from the base64- and JSON-decoded $_REQUEST['vmaps'] parameter, which is not covered by $securityFilter in objects/security.php. A remote attacker can craft a vmaps value (containing a non-empty VAST.campaing entry) and induce a user to open the resulting VMAP URL or a video page using it, injecting arbitrary <vmap:AdBreak> and <vmap:AdTagURI>/AdSource nodes into the generated XML. The player's IMA path (afterVideoJS -> PlayerSkins::setIMAADTag) then requests the attacker-supplied ad URLs, resulting in ad injection and cross-origin requests from the victim's playback session. The issue was unfixed at the time of reporting.
Weakness: CWE-91
Which versions are affected by CVE-2026-89247?
How do I fix CVE-2026-89247?
No fix has been published for CVE-2026-89247 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-89247 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-89247 exists.
Sources
Also known as GHSA-m43h-5r7h-8gjg, GHSA-whh8-w65x-9fvx.