lxml: CVE-2021-28957

Debian Bug report logs - #985643
lxml: CVE-2021-28957

Reply or subscribe to this bug.

Toggle useless messages

Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Salvatore Bonaccorso <carnil@debian.org>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: lxml: CVE-2021-28957

Date: Sun, 21 Mar 2021 10:21:35 +0100

Source: lxml
Version: 4.6.2-1
Severity: important
Tags: security upstream
Forwarded: https://bugs.launchpad.net/lxml/+bug/1888153
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

Hi,

The following vulnerability was published for lxml.

CVE-2021-28957[0]:
| lxml 4.6.2 places the HTML action attribute into defs.link_attrs (in
| html/defs.py) for later use in input sanitization, but does not do the
| same for the HTML5 formaction attribute.

Upstream bug [1] is not currently public at time of writing, but a
pull request exists [2].


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2021-28957
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28957
[1] https://bugs.launchpad.net/lxml/+bug/1888153
[2] https://github.com/lxml/lxml/pull/316

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore

Send a report that this bug log contains spam.