Ublockorigin Ublock Origin — known CVE vulnerabilities

Every CVE whose affected-product data names Ublockorigin Ublock Origin, ordered by CVSS severity, with EPSS exploit prediction and CISA KEV status.

CVEs (3)

• CVE-2019-11595 — CVSS 9.0 (critical): In uBlock before 0.9.5.15, the $rewrite filter option allows filter-list maintainers to run arbitrary code in a client-side session when a…
• CVE-2021-36773 — CVSS 7.5 (high): uBlock Origin before 1.36.2 and nMatrix before 4.4.9 support an arbitrary depth of parameter nesting for strict blocking, which allows…
• CVE-2025-4215 — CVSS 3.1 (low): A vulnerability was found in gorhill uBlock Origin up to 1.63.3b16. It has been classified as problematic. Affected is the function…