CVE-2026-19986

Medium

Description

A weakness has been identified in Adblock for Youtube Extension up to 7.2.1 on Chrome. The impacted element is the function updateDynamicRules of the file contentscript.js of the component Event Listener. This manipulation of the argument yt-anti-adblock-detected causes improper authorization. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

SeverityMedium
CVSS5.4
Exploit probability—
ProductAdblock For Youtube Extension
PublishedAug 17, 2026
First seenAug 17, 2026

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
adblock_for_youtube_extension adblock_for_youtube_extension7.2.0, 7.2.1—

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