PublicDateAtUSN: 2021-12-13 18:15:00 UTC
Candidate: CVE-2021-43818
PublicDate: 2021-12-13 18:15:00 UTC
References:
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43818
 https://github.com/lxml/lxml/security/advisories/GHSA-55x5-fj6c-h6m8
 https://github.com/lxml/lxml/commit/12fa9669007180a7bb87d990c375cf91ca5b664a (lxml-4.6.5)
 https://github.com/lxml/lxml/commit/f2330237440df7e8f39c3ad1b1aa8852be3b27c0 (lxml-4.6.5)
 https://github.com/lxml/lxml/commit/f2330237440df7e8f39c3ad1b1aa8852be3b27c0
 https://github.com/lxml/lxml/commit/a3eacbc0dcf1de1c822ec29fb7d090a4b1712a9c#diff-59130575b4fb2932c957db2922977d7d89afb0b2085357db1a14615a2fcad776
 https://github.com/lxml/lxml/commit/12fa9669007180a7bb87d990c375cf91ca5b664a
 https://ubuntu.com/security/notices/USN-5225-1
Description:
 lxml is a library for processing XML and HTML in the Python language. Prior
 to version 4.6.5, the HTML Cleaner in lxml.html lets certain crafted script
 content pass through, as well as script content in SVG files embedded using
 data URIs. Users that employ the HTML cleaner in a security relevant
 context should upgrade to lxml 4.6.5 to receive a patch. There are no known
 workarounds available.
Ubuntu-Description:
Notes:
Mitigation:
Bugs:
Priority: medium
Discovered-by:
Assigned-to: leosilva
CVSS:
 nvd: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L [7.1 HIGH]


Patches_lxml:
upstream_lxml: needs-triage
trusty/esm_lxml: released (3.3.3-1ubuntu0.2+esm5)
esm-infra/xenial_lxml: released (3.5.0-1ubuntu0.4+esm2)
trusty_lxml: ignored (out of standard support)
xenial_lxml: ignored (out of standard support)
bionic_lxml: released (4.2.1-1ubuntu0.6)
focal_lxml: released (4.5.0-1ubuntu0.5)
hirsute_lxml: released (4.6.3-1ubuntu0.2)
impish_lxml: released (4.6.3+dfsg-0.1ubuntu0.2)
jammy_lxml: released (4.7.1-1)
devel_lxml: released (4.7.1-1)