CVE-2021-36773
HIGH7.5EPSS 1.5%ublock-origin - security update
Published: 7/18/2021Modified: 4/28/2026
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 functionality).
Affected packages (2)
- Debian/ublock-originfrom 0, < 1.37.0+dfsg-1~deb11u1
- Debian/ublock-originfrom 0, < 1.42.0+dfsg-1~deb9u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |