cvedb.io
CVE-2021-43818
HIGH · CVSS 8.2
EPSS exploitation probability: 0%
Published 2021-12-13T18:15:08.387 · Last modified 2026-06-17T04:11:30.140

Summary

lxml is a library for processing XML and HTML in the Python language. Prior to version 4.6.5, the HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs. Users that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5 to receive a patch. There are no known workarounds available.

Affected products

lxml — lxml

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.