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MEDIUM

CVE-2019-16935

CVSS v3

6.1

MEDIUM

EPSS Score

4.7 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • CVE-2019-16935 Red Hat Product Security655 products fixed · 8 known affected

    python: XSS vulnerability in the documentation XML-RPC server in server_title field

    python.src as a component of Red Hat Enterprise Linux 5 · python as a component of Red Hat Enterprise Linux 6 · python-devel as a component of Red Hat Enterprise Linux 6

  • RHSA-2021:0949 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat OpenShift Do openshift/odo-init-image 1.1.3 security update

  • RHSA-2020:4433 Red Hat Product Security56 products fixed

    Red Hat Security Advisory: python3 security and bug fix update

  • RHSA-2020:4285 Red Hat Product Security134 products fixed

    Red Hat Security Advisory: rh-python36 security, bug fix, and enhancement update

  • RHSA-2020:3911 Red Hat Product Security79 products fixed

    Red Hat Security Advisory: python security update

  • RHSA-2020:3888 Red Hat Product Security121 products fixed

    Red Hat Security Advisory: python3 security update

1 more advisory

Full record on NVD

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.

Technical details

Published
2019-09-28

Frequently asked questions

What is CVE-2019-16935?

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.

Is CVE-2019-16935 actively exploited?

Active exploitation of CVE-2019-16935 has not been confirmed. Its EPSS score was 4.7% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-16935?

CVE-2019-16935 has a CVSS v3 base score of 6.1 (MEDIUM severity).

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