CVE-2020-27783

MEDIUM

Description

A XSS vulnerability was discovered in python-lxml's clean module. The module's parser didn't properly imitate browsers, which caused different behaviors between the sanitizer and the user's page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1901633

https://lists.debian.org/debian-lts-announce/2020/12/msg00028.html

https://lists.fedoraproject.org/archives/list/[email protected]/message/JKG67GPGTV23KADT4D4GK4RMHSO4CIQL/

https://lists.fedoraproject.org/archives/list/[email protected]/message/TMHVKRUT22LVWNL3TB7HPSDHJT74Q3JK/

https://www.debian.org/security/2020/dsa-4810

Details

Source: MITRE

Published: 2020-12-03

Updated: 2021-01-14

Type: CWE-79

Risk Information

CVSS v2.0

Base Score: 4.3

Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3.0

Base Score: 6.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Impact Score: 2.7

Exploitability Score: 2.8

Severity: MEDIUM