python-lxml: clean_html input sanitization flaw
Published May 14, 2014
5.3
MEDIUMCVSS 4.0
EPSS 6.33%
Description
Incomplete blacklist vulnerability in the lxml.html.clean module in lxml before 3.3.5 allows remote attackers to conduct cross-site scripting (XSS) attacks via control characters in the link scheme to the clean_html function.
Affected products
No data.
- ≤ 3.3.4
- 0.5
- 0.5.1
- 0.6
- 0.7
- 0.8
- 0.9
- 0.9.1
- 0.9.2
- 1.0
- 1.0.1
- 1.0.2
- 1.0.3
- 1.0.4
- 1.1
- 1.1.1
- 1.1.2
- 1.2
- 1.2.1
- 1.3
- 1.3.1
- 1.3.2
- 1.3.3
- 1.3.4
- 1.3.5
- 1.3.6
- 2.0
- 2.0.1
- 2.0.2
- 2.0.3
- 2.0.4
- 2.0.5
- 2.0.6
- 2.0.7
- 2.0.8
- 2.0.9
- 2.0.10
- 2.0.11
- 2.1
- 2.1
- 2.1
- 2.1
- 2.1.1
- 2.1.2
- 2.1.3
- 2.1.4
- 2.2
- 2.2
- 2.2
- 2.2
- 2.2
- 2.2
- 2.2.1
- 2.2.2
- 2.2.3
- 2.2.4
- 2.2.5
- 2.2.6
- 2.2.7
- 2.2.8
- 2.3
- 2.3
- 2.3
- 2.3
- 2.3.1
- 2.3.2
- 2.3.3
- 2.3.4
- 2.3.5
- 2.3.6
- 3.0
- 3.0
- 3.0
- 3.0
- 3.0.1
- 3.0.2
- 3.1
- 3.1.0
- 3.1.1
- 3.1.2
- 3.2.0
- 3.2.1
- 3.2.2
- 3.2.3
- 3.2.4
- 3.2.5
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.1
- 3.3.2
- 3.3.3
No data.
Red Hat Enterprise Linux 5
python-lxml
Will not fix
Red Hat Enterprise Linux 6
python-lxml
Will not fix
Red Hat Enterprise Linux 7
python-lxml
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | python-lxml | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | python-lxml | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | python-lxml | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Red Hat Product Security has rated this issue as having Low security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:N/I:P/A:N
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Dec 17, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.33% (0.06333) | 93.42th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.33% (0.06333) | 92.71th | v5 (v2026.06.15) |
| Dec 18, 2025 | 4.76% (0.04757) | 89.07th | v4 (v2025.03.14) |
| Oct 22, 2025 | 6.36% (0.06363) | 90.53th | v4 (v2025.03.14) |
| Jul 13, 2025 | 8.19% (0.08192) | 91.78th | v4 (v2025.03.14) |
| Jul 12, 2025 | 6.72% (0.06721) | 90.83th | v4 (v2025.03.14) |
| Jun 19, 2025 | 14.78% (0.14779) | 94.16th | v4 (v2025.03.14) |
| May 20, 2025 | 9.49% (0.09494) | 92.39th | v4 (v2025.03.14) |
| Mar 22, 2025 | 18.00% (0.17998) | 94.69th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.22% (0.05220) | 89.23th | v4 (v2025.03.14) |
| Dec 17, 2024 | 2.51% (0.02514) | 89.82th | v3 (v2023.03.01) |
| May 3, 2024 | 1.31% (0.01312) | 85.83th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.31% (0.01312) | 83.83th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.35% (0.04353) | 87.67th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.35% (0.04353) | 86.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.35% (0.04353) | 70.18th | v2 (v2022.01.01) |
References (30)
- http://advisories.mageia.org/MGASA-2014-0218.html x_refsource_CONFIRM
- http://lists.opensuse.org/opensuse-updates/2014-05/msg00083.html vendor-advisoryx_refsource_SUSE
- http://lxml.de/3.3/changes-3.3.5.html x_refsource_CONFIRM
- http://seclists.org/fulldisclosure/2014/Apr/210 mailing-listx_refsource_FULLDISC
- http://seclists.org/fulldisclosure/2014/Apr/319 mailing-listx_refsource_FULLDISCExploit
- http://secunia.com/advisories/58013 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/58744 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/59008 third-party-advisoryx_refsource_SECUNIA
- http://www.debian.org/security/2014/dsa-2941 vendor-advisoryx_refsource_DEBIAN
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:112 vendor-advisoryx_refsource_MANDRIVA
- http://www.openwall.com/lists/oss-security/2014/05/09/7 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/67159 vdb-entryx_refsource_BIDExploit
- http://www.ubuntu.com/usn/USN-2217-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2014-3146 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1092613 Issue Tracking
- https://github.com/advisories/GHSA-57qw-cc2g-pv5p Advisory
- https://github.com/lxml/lxml/commit/3f3082e0a67851cde26a48da3d1f4b75d8aa07ec
- https://github.com/lxml/lxml/commit/86e81ab393ba14c1be71284675851a3bdce57d69
- https://github.com/lxml/lxml/commit/e86b294f1f81b899a59925123560ff924a72f1cc
- https://github.com/lxml/lxml/pull/273
- https://github.com/pypa/advisory-database/tree/main/vulns/lxml/PYSEC-2014-9.yaml
- https://mailman-mail5.webfaction.com/pipermail/lxml/2014-April/007128.html mailing-listx_refsource_MLISTExploit
- https://nvd.nist.gov/vuln/detail/CVE-2014-3146
- https://web.archive.org/web/20140724172044/http://secunia.com/advisories/58013
- https://web.archive.org/web/20140805110535/http://secunia.com/advisories/59008
- https://web.archive.org/web/20140806061046/http://secunia.com/advisories/58744
- https://web.archive.org/web/20141017122607/https://mailman-mail5.webfaction.com/pipermail/lxml/2014-April/007128.html
- https://web.archive.org/web/20150523055039/http://www.mandriva.com/en/support/security/advisories/advisory/MDVSA-2015:112/?name=MDVSA-2015:112
- https://web.archive.org/web/20200228180542/http://www.securityfocus.com/bid/67159
- https://www.cve.org/CVERecord?id=CVE-2014-3146
Change history (0)
No recorded changes yet.