CVE-2026-86188

AVideo YPTSocket Plugin Unauthenticated Cross-Site Scripting

HIGH
7.2
CVSS Score
Published: September 5, 2026 at 12:09 PM UTC
Updated: September 8, 2026 at 08:19 PM UTC
1 product affected across 1 vendorAVideo

Using AVideo by WWBN?

Get instant alerts when new vulnerabilities affect AVideo - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.2
Exploit prediction
EPSS 0.4%
SSVC
PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 29.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.2HIGHVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-79

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card