Advisories » MGASA-2021-0246

Updated python-lxml packages fix a security vulnerability

Publication date: 13 Jun 2021
Type: security
Affected Mageia releases : 7 , 8
CVE: CVE-2021-28957

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 (CVE-2021-28957).
                

References

SRPMS

7/core

8/core