Moderate severityNVD Advisory· Published Dec 2, 2018· Updated Dec 18, 2025
CVE-2018-19787
CVE-2018-19787
Description
An issue was discovered in lxml before 4.2.5. lxml/html/clean.py in the lxml.html.clean module does not remove javascript: URLs that use escaping, allowing a remote attacker to conduct XSS attacks, as demonstrated by "j a v a s c r i p t:" in Internet Explorer. This is a similar issue to CVE-2014-3146.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
lxmlPyPI | < 4.2.5 | 4.2.5 |
Affected products
64- ghsa-coords64 versionspkg:pypi/lxmlpkg:rpm/opensuse/python-lxml&distro=openSUSE%20Leap%2015.3pkg:rpm/suse/ardana-barbican&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/grafana&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/grafana&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/openstack-barbican&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/openstack-barbican&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/openstack-cinder&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/openstack-cinder&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/openstack-heat-gbp&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/openstack-heat-gbp&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/openstack-horizon-plugin-gbp-ui&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/openstack-horizon-plugin-gbp-ui&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/openstack-ironic&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/openstack-ironic&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/openstack-keystone&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/openstack-keystone&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/openstack-neutron&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/openstack-neutron&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/openstack-neutron-gbp&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/openstack-neutron-gbp&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/python-lxml&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/python-lxml&distro=SUSE%20Enterprise%20Storage%207pkg:rpm/suse/python-lxml&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-ESPOSpkg:rpm/suse/python-lxml&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSSpkg:rpm/suse/python-lxml&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/python-lxml&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Python%202%2015%20SP3pkg:rpm/suse/python-lxml&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2015%20SP2pkg:rpm/suse/python-lxml&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/python-lxml&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-BCLpkg:rpm/suse/python-lxml&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/python-lxml&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/python-lxml&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/python-lxml&distro=SUSE%20Manager%20Proxy%204.1pkg:rpm/suse/python-lxml&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.1pkg:rpm/suse/python-lxml&distro=SUSE%20Manager%20Server%204.1pkg:rpm/suse/python-lxml&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/python-lxml&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/python-lxml&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/python-lxml&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/python-Pillow&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/python-Pillow&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/python-XStatic-jquery-ui&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/python-XStatic-jquery-ui&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/release-notes-suse-openstack-cloud&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/release-notes-suse-openstack-cloud&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/rubygem-sinatra&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/venv-openstack-barbican&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/venv-openstack-cinder&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/venv-openstack-designate&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/venv-openstack-glance&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/venv-openstack-heat&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/venv-openstack-horizon&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/venv-openstack-ironic&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/venv-openstack-keystone&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/venv-openstack-magnum&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/venv-openstack-manila&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/venv-openstack-monasca-ceilometer&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/venv-openstack-monasca&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/venv-openstack-neutron&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/venv-openstack-nova&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/venv-openstack-octavia&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/venv-openstack-sahara&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/venv-openstack-swift&distro=SUSE%20OpenStack%20Cloud%209
< 4.2.5+ 63 more
- (no CPE)range: < 4.2.5
- (no CPE)range: < 4.7.1-3.7.1
- (no CPE)range: < 9.0+git.1644879908.8a641c1-3.13.1
- (no CPE)range: < 6.7.4-3.26.1
- (no CPE)range: < 6.7.4-3.26.1
- (no CPE)range: < 7.0.1~dev24-3.14.1
- (no CPE)range: < 7.0.1~dev24-3.14.1
- (no CPE)range: < 13.0.10~dev24-3.34.2
- (no CPE)range: < 13.0.10~dev24-3.34.2
- (no CPE)range: < 14.0.1~dev4-3.9.1
- (no CPE)range: < 14.0.1~dev4-3.9.1
- (no CPE)range: < 14.0.1~dev3-3.9.1
- (no CPE)range: < 14.0.1~dev3-3.9.1
- (no CPE)range: < 11.1.5~dev18-3.28.2
- (no CPE)range: < 11.1.5~dev18-3.28.2
- (no CPE)range: < 14.2.1~dev9-3.28.2
- (no CPE)range: < 14.2.1~dev9-3.28.2
- (no CPE)range: < 13.0.8~dev206-3.40.1
- (no CPE)range: < 13.0.8~dev206-3.40.1
- (no CPE)range: < 14.0.1~dev33-3.31.1
- (no CPE)range: < 14.0.1~dev33-3.31.1
- (no CPE)range: < 3.6.1-8.5.1
- (no CPE)range: < 4.7.1-3.7.1
- (no CPE)range: < 4.7.1-3.7.1
- (no CPE)range: < 4.7.1-3.7.1
- (no CPE)range: < 4.7.1-3.7.1
- (no CPE)range: < 4.7.1-3.7.1
- (no CPE)range: < 4.7.1-3.7.1
- (no CPE)range: < 3.6.1-8.5.1
- (no CPE)range: < 4.7.1-3.7.1
- (no CPE)range: < 4.7.1-3.7.1
- (no CPE)range: < 3.6.1-8.5.1
- (no CPE)range: < 4.7.1-3.7.1
- (no CPE)range: < 4.7.1-3.7.1
- (no CPE)range: < 4.7.1-3.7.1
- (no CPE)range: < 4.7.1-3.7.1
- (no CPE)range: < 3.6.1-8.5.1
- (no CPE)range: < 4.2.4-3.3.1
- (no CPE)range: < 3.6.1-8.5.1
- (no CPE)range: < 4.2.4-3.3.1
- (no CPE)range: < 5.2.0-3.17.1
- (no CPE)range: < 5.2.0-3.17.1
- (no CPE)range: < 1.13.0.1-4.3.1
- (no CPE)range: < 1.13.0.1-4.3.1
- (no CPE)range: < 9.20220413-3.30.1
- (no CPE)range: < 9.20220413-3.30.1
- (no CPE)range: < 1.4.6-4.3.1
- (no CPE)range: < 7.0.1~dev24-3.35.2
- (no CPE)range: < 13.0.10~dev24-3.38.1
- (no CPE)range: < 7.0.2~dev2-3.35.1
- (no CPE)range: < 17.0.1~dev30-3.33.1
- (no CPE)range: < 11.0.4~dev4-3.35.1
- (no CPE)range: < 14.1.1~dev11-4.39.1
- (no CPE)range: < 11.1.5~dev18-4.33.1
- (no CPE)range: < 14.2.1~dev9-3.36.1
- (no CPE)range: < 7.2.1~dev1-4.35.1
- (no CPE)range: < 7.4.2~dev60-3.41.1
- (no CPE)range: < 1.8.2~dev3-3.35.1
- (no CPE)range: < 2.7.1~dev10-3.37.1
- (no CPE)range: < 13.0.8~dev206-6.39.1
- (no CPE)range: < 18.3.1~dev91-3.39.1
- (no CPE)range: < 3.2.3~dev7-4.35.1
- (no CPE)range: < 9.0.2~dev15-3.35.1
- (no CPE)range: < 2.19.2~dev48-2.30.1
Patches
Vulnerability mechanics
References
10- github.com/advisories/GHSA-xp26-p53h-6h2pghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2018-19787ghsaADVISORY
- usn.ubuntu.com/3841-1/mitrevendor-advisoryx_refsource_UBUNTU
- usn.ubuntu.com/3841-2/mitrevendor-advisoryx_refsource_UBUNTU
- github.com/lxml/lxml/commit/6be1d081b49c97cfd7b3fbd934a193b668629109ghsax_refsource_MISCWEB
- github.com/pypa/advisory-database/tree/main/vulns/lxml/PYSEC-2018-12.yamlghsaWEB
- lists.debian.org/debian-lts-announce/2018/12/msg00001.htmlghsamailing-listx_refsource_MLISTWEB
- lists.debian.org/debian-lts-announce/2020/11/msg00044.htmlghsamailing-listx_refsource_MLISTWEB
- usn.ubuntu.com/3841-1ghsaWEB
- usn.ubuntu.com/3841-2ghsaWEB
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