PoC Index85,079 CVEs with PoCs

CVE-2026-19986

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

LOW 2.1EPSS 0.4%

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.

Affected
Adblock for Youtube Extension
CVSS v4.0 VULDB
2.1 LOWCVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS v3.1 VULDB
5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
CVSS v2.0 VULDB
6.4 MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:P
EPSS
0.42% chance of exploitation in the next 30 days, 35th percentile
Published
2026-08-17
Updated
2026-08-19

Proof-of-concept exploits (1)

References

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