Debian Security Advisory
DLA-2606-1 lxml -- LTS security update
- Date Reported:
- 24 Mar 2021
- Affected Packages:
- Security database references:
- In Mitre's CVE dictionary: CVE-2021-28957.
- More information:
An issue has been found in lxml, a pythonic binding for the libxml2 and libxslt libraries.
Due to missing input sanitization, XSS is possible for the HTML5 formaction attribute.
For Debian 9 stretch, this problem has been fixed in version 3.7.1-1+deb9u4.
We recommend that you upgrade your lxml packages.
For the detailed security status of lxml please refer to its security tracker page at: https://security-tracker.debian.org/tracker/lxml
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS