XSS in Lxml
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 the clean_html function.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.043 (89.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Lxml — versions 0.5, 0.5.1, 0.6
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- DSA-2941 (vendor-advisory, x_refsource_DEBIAN)
- secalert@redhat.com (x_refsource_CONFIRM)
- [oss-security] 20140509 Re: CVE request: python-lxml clean_html() input sanitization flaw (mailing-list, x_refsource_MLIST)
- USN-2217-1 (x_refsource_UBUNTU, vendor-advisory)
- [lxml] 20140415 lxml.html.clean vulnerability (mailing-list, x_refsource_MLIST, Exploit)
- 58744 (x_refsource_SECUNIA, third-party-advisory)
- secalert@redhat.com (x_refsource_CONFIRM)
- 67159 (Exploit, vdb-entry, x_refsource_BID)
- MDVSA-2015:112 (vendor-advisory, x_refsource_MANDRIVA)
- 58013 (x_refsource_SECUNIA, third-party-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2014-3146?
- CVE-2014-3146 is a medium-severity vulnerability in Lxml, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2014-05-14.
- How severe is CVE-2014-3146?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2014-3146 known to be exploited?
- 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.