{"id":"CVE-2021-36773","aliases":["DEBIAN-CVE-2021-36773","DLA-3062-1","EUVD-2021-23361","GHSA-vgm6-c9jx-rm2c","UBUNTU-CVE-2021-36773"],"status":"published","title":"uBlock Origin before 1.36.2 and nMatrix before 4.4.9 support an arbitrary depth of parameter...","description":"uBlock Origin before 1.36.2 and nMatrix before 4.4.9 support an arbitrary depth of parameter nesting for strict blocking, which allows crafted web sites to cause a denial of service (unbounded recursion that can trigger memory consumption and a loss of all blocking 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Tracking","Third Party Advisory","report"]},{"url":"https://github.com/vtriolet/writings/blob/main/posts/2021/ublock_origin_and_umatrix_denial_of_service.adoc","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence","report"]},{"url":"https://lists.debian.org/debian-lts-announce/2022/06/msg00024.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-36773"},{"url":"https://github.com/advisories/GHSA-vgm6-c9jx-rm2c"},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-36773","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-36773","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-36773","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-36773","description":"uBlock Origin before 1.36.2 and nMatrix before 4.4.9 support an arbitrary depth of parameter nesting for strict blocking, which allows crafted 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nesting for strict blocking, which allows crafted web sites to cause a denial of service (unbounded recursion that can trigger memory consumption and a loss of all blocking functionality).","status":"published","published":"2022-05-24T19:08:20Z","modified":"2023-01-27T05:03:03Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-674"],"updated_at":"2026-11-02T14:42:09.625504Z"}],"nvd":[{"id":"CVE-2021-36773","description":"uBlock Origin before 1.36.2 and nMatrix before 4.4.9 support an arbitrary depth of parameter nesting for strict blocking, which allows crafted web sites to cause a denial of service (unbounded recursion that can trigger memory consumption and a loss of all blocking 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