Stored Cross-Site Scripting in WWBN AVideo Products
CVE-2026-126806

9.3CRITICAL

Key Information:

Vendor

Wwbn

Status
Avideo
Vendor
CVE Published:
11 November 2026

What is CVE-2026-126806?

WWBN AVideo versions 14.3 through 29.7.1 are susceptible to a stored cross-site scripting (XSS) vulnerability. This flaw allows attackers to inject malicious scripts via the 'videoDownloadedLink' parameter, which is stored unescaped in the system. Exploiting this vulnerability, an attacker could embed event handler payloads in a URL, which is then rendered as a Source tag in the administrative interface, specifically in the 'managerVideos_body.php'. This can lead to the execution of malicious scripts under the administrator's session, enabling the installation of unauthorized PHP plugin archives.

Affected Version(s)

AVideo 14.3 <= 29.7.1

References

https://github.com/WWBN/AVideo/security/advisories/GHSA-2...
vendor-advisory
https://github.com/WWBN/AVideo/commit/da1da205608d57b1e69...
patch
https://github.com/WWBN/AVideo/blob/v29.7.1/objects/funct...
technical-description

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

AlpetGexha
.