CVE-2026-89247: XML Injection (aka Blind XPath Injection) in WWBN AVideo
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.
AI Analysis
Technical Summary
CVE-2026-89247 is an XML injection vulnerability in WWBN AVideo at commit c3edcc274c389816d434acadac07ee78eaf330c1 and earlier. The vulnerability exists in plugin/AD_Server/VMAP.php, which emits XML content incorporating unencoded user-supplied values from the 'vmaps' request parameter. These values are base64- and JSON-decoded but not filtered by the security filter, allowing injection of arbitrary <vmap:AdBreak> and <vmap:AdTagURI> nodes. This leads the video player to request attacker-supplied ad URLs, enabling ad injection and cross-origin requests from the victim's playback session. The vulnerability is reachable without authentication when the AD_Server plugin is enabled. No fix was available at the time of reporting.
Potential Impact
An unauthenticated remote attacker can inject arbitrary XML nodes into VMAP responses, causing the victim's video player to load attacker-controlled ads. This can lead to unwanted ad injection and cross-origin requests from the victim's browser during video playback. The vulnerability has a CVSS 4.0 base score of 5.3 (medium severity), indicating limited confidentiality and integrity impact but no availability impact. There is no known exploitation in the wild and no vendor patch available at the time of reporting.
Mitigation Recommendations
No official fix or patch is available at the time of reporting. Users should consider disabling the AD_Server plugin if not required or restrict access to the VMAP.php endpoint to trusted users. Monitor vendor advisories for updates or patches addressing this vulnerability.
CVE-2026-89247: XML Injection (aka Blind XPath Injection) in WWBN AVideo
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.
CVSS v4.0
Score 5.3medium
Affected software
WWBN
AVideo
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-89247 is an XML injection vulnerability in WWBN AVideo at commit c3edcc274c389816d434acadac07ee78eaf330c1 and earlier. The vulnerability exists in plugin/AD_Server/VMAP.php, which emits XML content incorporating unencoded user-supplied values from the 'vmaps' request parameter. These values are base64- and JSON-decoded but not filtered by the security filter, allowing injection of arbitrary <vmap:AdBreak> and <vmap:AdTagURI> nodes. This leads the video player to request attacker-supplied ad URLs, enabling ad injection and cross-origin requests from the victim's playback session. The vulnerability is reachable without authentication when the AD_Server plugin is enabled. No fix was available at the time of reporting.
Potential Impact
An unauthenticated remote attacker can inject arbitrary XML nodes into VMAP responses, causing the victim's video player to load attacker-controlled ads. This can lead to unwanted ad injection and cross-origin requests from the victim's browser during video playback. The vulnerability has a CVSS 4.0 base score of 5.3 (medium severity), indicating limited confidentiality and integrity impact but no availability impact. There is no known exploitation in the wild and no vendor patch available at the time of reporting.
Mitigation Recommendations
No official fix or patch is available at the time of reporting. Users should consider disabling the AD_Server plugin if not required or restrict access to the VMAP.php endpoint to trusted users. Monitor vendor advisories for updates or patches addressing this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-11T10:51:31.663Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aa3e6de91cc7f38481866bc
Added to database: 09/11/2026, 11:32:46 UTC
Last enriched: 09/11/2026, 11:48:02 UTC
Last updated: 09/11/2026, 20:15:18 UTC
Views: 11
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