Reference page — cumulative record through Thursday, October 8, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2019-16935

CVE-2019-16935MEDIUM

n/a n/a — 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.

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   R  C  L  L  N    6.1   .0465   91.5     —

AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —

TIMELINE
  Sep 28  Reserved by mitre
  Sep 28  Published (CNA: mitre)
  Oct 7   EXPLOIT PUBLISHED — CVE-2019-16935. Public exploit reference added.

CWE-79 · CNA: mitre · CVSS v3.1 · 23 references · NVD status: Modified

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
September 28, 2019	Reserved	Reserved by mitre
September 28, 2019	Published	Published (CNA: mitre)
October 7, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2019-16935. Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	n/a	—	n/a	—

Weaknesses

CWE-79

References (23)

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00062.html [Mailing List, Third Party Advisory]
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00063.html [Mailing List, Third Party Advisory]
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00012.html [Mailing List, Third Party Advisory]
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00021.html [Mailing List, Third Party Advisory]
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html [Mailing List, Third Party Advisory]
https://bugs.python.org/issue38243 [Exploit, Vendor Advisory]
https://github.com/python/cpython/blob/35c0809158be7feae4c4f877a08b93baea2d8291/Lib/xmlrpc/server.py#L897 [Third Party Advisory]
https://github.com/python/cpython/blob/e007860b8b3609ce0bc62b1780efaa06241520bd/Lib/DocXMLRPCServer.py#L213 [Third Party Advisory]
https://github.com/python/cpython/pull/16373 [Exploit, Third Party Advisory]
https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html [Mailing List, Third Party Advisory]
https://lists.debian.org/debian-lts-announce/2021/04/msg00015.html [Mailing List, Third Party Advisory]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4X3HW5JRZ7GCPSR7UHJOLD7AWLTQCDVR/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BEARDOTXCYPYELKBD2KWZ27GSPXDI3GQ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/COATURTCY7G67AYI6UDV5B2JZTBCKIDX/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JCPGLTTOBB3QEARDX4JOYURP6ELNNA2V/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K7HNVIFMETMFWWWUNTB72KYJYXCZOS5V/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M34WOYCDKTDE5KLUACE2YIEH7D37KHRX/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OYGESQSGIHDCIGOBVF7VXCMIE6YDWRYB/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZBTGPBUABGXZ7WH7677OEM3NSP6ZEA76/
https://security.netapp.com/advisory/ntap-20191017-0004/ [Third Party Advisory]
https://usn.ubuntu.com/4151-1/ [Third Party Advisory]
https://usn.ubuntu.com/4151-2/ [Third Party Advisory]
https://www.oracle.com/security-alerts/cpujul2020.html [Third Party Advisory]

Authoritative record: CVE-2019-16935 at cve.org

Weaknesses: CWE-79

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2019-16935 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Thursday, October 8, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.