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Vulnerabilities CVE-2026-19986

CVE-2026-19986

Medium
Open
TLP:CLEAR

Adblock for Youtube Extension Event Listener contentscript.js updateDynamicRules improper authorization

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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.

Details

CVSS Score
5.3
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Confidence
90%
Published
Aug 17, 2026
Last Modified
Aug 19, 2026
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