| Package | Affected versions | Patched versions |
|---|---|---|
| lxml | < 4.6.3 | 4.6.3 |
| lxml | < 4.6.3 | 4.6.3 |
| zfs storage appliance kit | = 8.8 |
An XSS vulnerability was discovered in the python lxml 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.
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