Debian Security Advisory

DSA-4880-1 lxml -- security update

Date Reported:
29 Mar 2021
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 985643.
In Mitre's CVE dictionary: CVE-2021-28957.
More information:

Kevin Chung discovered that lxml, a Python binding for the libxml2 and libxslt libraries, did not properly sanitize its input. This would allow a malicious user to mount a cross-site scripting attack.

For the stable distribution (buster), this problem has been fixed in version 4.3.2-1+deb10u3.

We recommend that you upgrade your lxml packages.

For the detailed security status of lxml please refer to its security tracker page at: