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CVE-2019-16935

6.1 · MEDIUM

The documentation XML-RPC server in Python through 2.7.16, 3.x through 3.6.9, and 3.7.x through 3.7.4 has XSS via the server_title field.

Published Sep 28, 2019CWE-79EPSS 4.65%

Overview

CVE-2019-16935 is a medium-severity vulnerability. It was published on September 28, 2019 and has a CVSS 3.1 base score of 6.1 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The documentation XML-RPC server in Python through 2.7.16, 3.x through 3.6.9, and 3.7.x through 3.7.4 has XSS via the server_title field. This occurs in Lib/DocXMLRPCServer.py in Python 2.x, and in Lib/xmlrpc/server.py in Python 3.x. If set_server_title is called with untrusted input, arbitrary JavaScript can be delivered to clients that visit the http URL for this server.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Reflists.opensuse.org/opensuse-security-announce/2019-10/msg00062.htmlReflists.opensuse.org/opensuse-security-announce/2019-10/msg00063.htmlReflists.opensuse.org/opensuse-security-announce/2019-11/msg00012.htmlReflists.opensuse.org/opensuse-security-announce/2019-11/msg00021.htmlReflists.opensuse.org/opensuse-security-announce/2020-01/msg00040.htmlRefbugs.python.org/issue38243GitHubgithub.com/python/cpython/blob/35c0809158be7feae4c4f877a08b93baea2d8291/Lib/xmlrpc/server.py#L897GitHubgithub.com/python/cpython/blob/e007860b8b3609ce0bc62b1780efaa06241520bd/Lib/DocXMLRPCServer.py#L213GitHubgithub.com/python/cpython/pull/16373Reflists.debian.org/debian-lts-announce/2020/07/msg00011.html

How CyberStrike helps

Frequently asked questions

What is CVE-2019-16935?

CVE-2019-16935 is a medium-severity vulnerability. It was published on September 28, 2019 and has a CVSS 3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2019-16935?

This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2019-16935?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2019-16935?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-16935 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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