Information Disclosure Vulnerability in vidIQ Vision for YouTube Extension by vidIQ
CVE-2026-82809

5.3MEDIUM

Key Information:

Vendor

Vidiq

Status
Vision For Youtube Extension
Vendor
CVE Published:
31 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-82809?

An information disclosure vulnerability has been identified in the vidIQ Vision for YouTube Extension (version 3.199.0) for Chrome. The flaw resides in the window.addEventListener method utilized by the postMessage handler, allowing an attacker to manipulate the argument 'vidiqEvent' and extract sensitive information. This type of exploit can be executed remotely, posing a significant security risk. It is noteworthy that vidIQ does not currently accept submissions for security vulnerabilities nor has it established a bug bounty program.

Affected Version(s)

Vision for YouTube Extension 3.199.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-82809 - Proof of Concept

References

https://vuldb.com/vuln/397228
vdb-entrytechnical-description
https://vuldb.com/vuln/397228/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-82809
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

DRXYJ (VulDB User)
VulDB CNA Team
.