CVE-2014-3146
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
02 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
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 6.33% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 93.5% of scored records. A rank, not a probability.
- NVD base score
- 6.1 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Low. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2014-05-14 19:00Z12 YR AGO
- Last updated
- 2025-12-17 21:03Z10 MO AGO
- Reserved
- 2014-05-02
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.1)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Weaknesses
- CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base
- Data version
- 5.2
- Document digest
- 192ddc0a29786e2644d0f1b3d6ac1b01ef813e7d6ede21705a72b00f8c526150
05 Affected products
06 References
- www.debian.orgDSA-2941http://www.debian.org/security/2014/dsa-2941
- lxml.dehttp://lxml.de/3.3/changes-3.3.5.html
- www.openwall.com[oss-security] 20140509 Re: CVE request: python-lxml clean_html() input sanitization flawhttp://www.openwall.com/lists/oss-security/2014/05/09/7
- www.ubuntu.comUSN-2217-1http://www.ubuntu.com/usn/USN-2217-1
- mailman-mail5.webfaction.com[lxml] 20140415 lxml.html.clean vulnerabilityhttps://mailman-mail5.webfaction.com/pipermail/lxml/2014-April/007128.html
- secunia.com58744http://secunia.com/advisories/58744
- advisories.mageia.orghttp://advisories.mageia.org/MGASA-2014-0218.html
- www.securityfocus.com67159http://www.securityfocus.com/bid/67159
- www.mandriva.comMDVSA-2015:112http://www.mandriva.com/security/advisories?name=MDVSA-2015:112
- secunia.com58013http://secunia.com/advisories/58013
- seclists.org20140415 lxml (python lib) vulnerabilityhttp://seclists.org/fulldisclosure/2014/Apr/210
- secunia.com59008http://secunia.com/advisories/59008
- lists.opensuse.orgopenSUSE-SU-2014:0735http://lists.opensuse.org/opensuse-updates/2014-05/msg00083.html
- seclists.org20140430 Re: lxml (python lib) vulnerabilityhttp://seclists.org/fulldisclosure/2014/Apr/319
07 Fixed in
Debian 12
- lxml Fixed in 3.3.5-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- lxml Fixed in 3.3.5-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- lxml Fixed in 3.3.5-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- lxml Fixed in 3.3.3-1ubuntu0.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.