USN-4666-2: lxml vulnerability

11 December 2020

lxml could allow cross-site scripting (XSS) attacks.



  • lxml - pythonic binding for the libxml2 and libxslt librarie


USN-4666-1 partially fixed a vulnerability in lxml, but an additional patch was needed. This update provides
the corresponding additional patch in order to properly fix the vulnerability.

Original advisory details:

It was discovered that lxml incorrectly handled certain HTML.
An attacker could possibly use this issue to cross-site scripting (XSS) attacks.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 20.10
Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04
Ubuntu 14.04
Ubuntu 12.04

In general, a standard system update will make all the necessary changes.


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