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.
References
Configurations
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Information
Published : 2021-03-20 22:15
Updated : 2022-12-09 10:15
NVD link : CVE-2021-28957
Mitre link : CVE-2021-28957
JSON object : View
CWE
CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Products Affected
lxml
- lxml
oracle
- zfs_storage_appliance_kit
fedoraproject
- fedora
debian
- debian_linux
netapp
- snapcenter