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. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Denial Of Service
Nmatrix
Ublock Origin
Umatrix
Debian Linux
NVD
GitHub
CVSS 3.1
7.5
EPSS
1.3%