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USN-4896-1: lxml vulnerability

30 March 2021

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



  • lxml - pythonic binding for the libxml2 and libxslt libraries


It was discovered that lxml incorrectly handled certain HTML attributes. A
remote attacker could possibly use this issue to perform 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

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


Related notices

  • USN-4896-2: python3-lxml, python-lxml-doc, lxml, python-lxml