#VU59660 Cross-site scripting in Lxml - CVE-2021-43818 

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Main Vulnerability Database Vulnerabilities #VU59660

#VU59660 Cross-site scripting in Lxml - CVE-2021-43818

Published: January 17, 2022


Vulnerability identifier: #VU59660
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-43818
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Lxml
Software vendor:
Lxml

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data within the HTML Cleaner in lxml.html. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.


Remediation

Install updates from vendor's website.

External links