ublock origin vulnerabilities and fixes

Recent CVEs affecting ublock origin, with upgrade or downgrade steps. 1 tracked.

Also searched as: ublockorigin.

ublock origin has 1 tracked vulnerability, 0 critical. A fixed release or vendor patch exists for 1. Most recent: 2025-05-02. Highest priority: CVE-2025-4215 (score 35/100).

• CVE-2025-4215 LOW 3.1 UPGRADE MITIGATE A vulnerability was found in gorhill uBlock Origin up to 1.63.3b16

FAQ

How do I fix ublock origin vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is ublock origin being exploited right now?

None of the tracked ublock origin CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which ublock origin CVE should I patch first?

CVE-2025-4215 currently ranks highest (35/100): A vulnerability was found in gorhill uBlock Origin up to 1.63.3b16.

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