vulnerability

Ubuntu: (Multiple Advisories) (CVE-2021-28957): lxml vulnerability

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
Mar 21, 2021
Added
Mar 31, 2021
Modified
Nov 15, 2024

Description

An XSS vulnerability was discovered in python-lxml's clean module versions before 4.6.3. When disabling the safe_attrs_only and forms arguments, the Cleaner class does not remove the formaction attribute allowing for JS to bypass the sanitizer. A remote attacker could exploit this flaw to run arbitrary JS code on users who interact with incorrectly sanitized HTML. This issue is patched in lxml 4.6.3.

Solution(s)

ubuntu-pro-upgrade-python-lxmlubuntu-pro-upgrade-python3-lxml
Title
NEW

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