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CVE-2026-82809— vidIQ Vision for YouTube Extension postMessage window.addEventListener information disclosure

Quick assessment

Affected
vidIQ Vision for YouTube Extension
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Chrome 浏览器上的 vidIQ Vision for YouTube 扩展程序 3.199.0 版本中发现了一个安全漏洞。受影响的组件是 postMessage Handler 中的 函数。通过对参数 进行操纵，可导致信息泄露。该漏洞可被远程利用，且利用方式已公开，可能被用于发起攻击。厂商说明：“目前，vidIQ 不接收安全漏洞提交，也没有建立漏洞赏金计划。”

CVSS 4.3 · Medium
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I. Basic Information for CVE-2026-82809

Vulnerability Information
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Vulnerability Title
vidIQ Vision for YouTube Extension postMessage window.addEventListener information disclosure
Source: CVE Program / CVE List V5
Vulnerability Description
A security flaw has been discovered in vidIQ Vision for YouTube Extension 3.199.0 on Chrome. The affected element is the function window.addEventListener of the component postMessage Handler. Performing a manipulation of the argument vidiqEvent results in information disclosure. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. The vendor explains: "At this time, vidIQ does not accept security vulnerability submissions, and we do not have a bug bounty program in place."
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
vidIQ Vision for YouTube Extension 3.199.0 cpe:2.3:a:vidiq:vision_for_youtube_extension:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-82809

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III. Intelligence Information for CVE-2026-82809

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Vendor Advisories for CVE-2026-82809 (1)

Security Blog Posts for CVE-2026-82809 (2)

Other References for CVE-2026-82809 (1)

IV. Related Vulnerabilities

Same weakness: CWE-200

V. Comments for CVE-2026-82809

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