CVE-2026-86188

MEDIUM CVSS 4.0: 6.9 EPSS 0.25%
Updated Sep 08, 2026
Wwbn
Parameter Value
CVSS 6.9 (MEDIUM)
Affected Versions before 29.0
Type CWE-79 (Cross-Site Scripting (XSS))
Vendor Wwbn
Public PoC No

AVideo with YPTSocket plugin enabled contains a cross-site scripting vulnerability allowing unauthenticated attackers to execute arbitrary JavaScript in other users' browsers via the websocket callback mechanism. Attackers can send crafted socket messages with callback names resolving to global functions like avideoConfirmHTML that accept untrusted data and assign it to innerHTML, achieving script execution in the victim's origin without authentication or user interaction.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
None
No disruption

CVSS Vector v4.0

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Wwbn Avideo
cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:*
<= 29.0