Critical severity · published Sep 10, 2026
CVE-2026-88869
AVideo AD_Server Stored XSS via log.php label parameter
9.3
CVSS
0.5%
EPSS
No
On KEV
Description
AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a stored cross-site scripting vulnerability in the AD_Server plugin's log.php endpoint that fails to escape the label parameter before storage. An unauthenticated attacker can inject malicious HTML through the label parameter, which is later rendered unsanitized in the admin Ad Types report using jQuery .html(), allowing execution of arbitrary JavaScript in an administrator's browser session.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 44% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AV
AVideo · WWBN
through c3edcc274c389816d434acadac07ee78eaf330c1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-88869
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-88869
github.com
https://github.com/WWBN/AVideo/security/advisories/GHSA-h68w-3r38-wmm8
www.vulncheck.com
https://www.vulncheck.com/advisories/avideo-ad-server-stored-xss-via-log-php-label-parameter
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