CVE-2014-3146

Publication date 14 May 2014

Last updated 19 December 2025

Ubuntu priority

Cvss 3 Severity Score

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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
lxml	14.04 LTS trusty	Fixed 3.3.3-1ubuntu0.1
	13.10 saucy	Fixed 3.2.0-1ubuntu0.1
	12.10 quantal	Ignored end of life
	12.04 LTS precise	Fixed 2.3.2-1ubuntu0.2
	10.04 LTS lucid	Ignored end of life

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
lxml	Upstream: e86b294

Severity score breakdown

Parameter	Value
Base score	6.1 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Changed
Confidentiality	Low
Integrity impact	Low
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References

Related Ubuntu Security Notices (USN)

USN-2217-1
lxml vulnerability
21 May 2014