CVE-2020-27783

Public Exploit

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.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.22% Top 25%
Vendor Advisory debian.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org
Affected: n/a python-lxml
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1901633 issue tracking patch exploit third party advisory
https://www.debian.org/security/2020/dsa-4810 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00028.html third party advisory mailing list
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMHVKRUT22LVWNL3TB7HPSDHJT74Q3JK/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JKG67GPGTV23KADT4D4GK4RMHSO4CIQL/ vendor advisory
https://www.oracle.com//security-alerts/cpujul2021.html third party advisory patch
https://advisory.checkmarx.net/advisory/CX-2020-4286 third party advisory exploit
https://security.netapp.com/advisory/ntap-20210521-0003/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-27783?
CVE-2020-27783 has been scored as a medium severity vulnerability.
How to fix CVE-2020-27783?
To fix CVE-2020-27783, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-27783 being actively exploited in the wild?
It is possible that CVE-2020-27783 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-27783?
CVE-2020-27783 affects n/a python-lxml.
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