CVE-2014-3146

CVE-2014-3146 is a medium vulnerability published on May 14, 2014. 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.

CVE-2014-3146 was first published in the National Vulnerability Database on May 14, 2014, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

CVE-2014-3146 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 88.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

CVE-2014-3146 has a CVSS v3 base score of 6.1 (NVD).

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2014-3146, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.