Related Vulnerabilities: CVE-2020-27783  

A cross-site scripting vulnerability was discovered in python-lxml's clean module before version 4.6.2. The module's parser didn't properly imitate browsers, which caused different behaviors between the sanitizer and the user's page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code.

Severity Medium

Remote Yes

Type Cross-site scripting

Description

A cross-site scripting vulnerability was discovered in python-lxml's clean module before version 4.6.2. The module's parser didn't properly imitate browsers, which caused different behaviors between the sanitizer and the user's page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code.

AVG-1319 python-lxml 4.6.1-3 4.6.2-1 Medium Fixed

https://github.com/lxml/lxml/commit/a105ab8dc262ec6735977c25c13f0bdfcdec72a7