CVE-2021-36773
ublock-origin - security update
7.5
HIGH
CVSS 3.1
EPSS 1.3%
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).
How to fix CVE-2021-36773
To remediate CVE-2021-36773, upgrade the affected package to a fixed version below.
- —upgrade to 1.37.0+dfsg-1~deb11u1 or later
- —upgrade to 1.42.0+dfsg-1~deb9u1 or later
Is CVE-2021-36773 being exploited?
Low — EPSS is 1.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1.37.0+dfsg-1~deb11u1
- from 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 |