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CVE-2021-36773

nvd nist
Published: Jul 18, 2021Modified: Jun 17, 2026

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7.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability: 3.9 / Impact: 3.6
Source: NVD

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 (4)

Show all products
Sciruby: Nmatrix · Ublockorigin: Ublock Origin · Umatrix Project: Umatrix · Debian: Debian Linux
Sciruby
1 product
Nmatrix
Ublockorigin
1 product
Ublock Origin
Umatrix Project
1 product
Umatrix
Debian
1 product
Debian Linux
Configuration A
3 vulnerable
Vulnerable SoftwareAffected Versions
Nmatrix
Before 4.4.9
Ublock Origin
Before 1.36.2
Umatrix
Before 1.4.2
Configuration B
1 vulnerable
Vulnerable SoftwareAffected Versions
Debian Linux
Version 9.0

Related CWEs

CWE-674
Uncontrolled Recursion
The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.

References (6)

Source: cve@mitre.org
ExploitThird Party Advisory
Source: cve@mitre.org
Mailing ListThird Party Advisory
Source: cve@mitre.org
Issue TrackingThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
ExploitThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Issue TrackingThird Party Advisory

Timeline

No history available yet.