Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2019-15903

CVE-2019-15903HIGH

n/a n/a — In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing too early; a consecu…

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  N  N  H    7.5   .0664   93.8     —

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

TIMELINE
  Sep 4   Reserved by mitre
  Sep 4   Published (CNA: mitre)
  Oct 14  EXPLOIT PUBLISHED — CVE-2019-15903. Public exploit reference added.
  Oct 14  RESCORED — CVE-2019-15903. CVSS 6.5 → 7.5 (NVD).

CWE-125, CWE-776 · CNA: mitre · CVSS v3.1 · 60 references · NVD status: Modified

Description

In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing too early; a consecutive call to XML_GetCurrentLineNumber (or XML_GetCurrentColumnNumber) then resulted in a heap-based buffer over-read.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
September 4, 2019	Reserved	Reserved by mitre
September 4, 2019	Published	Published (CNA: mitre)
October 14, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2019-15903. Public exploit reference added.
October 14, 2026	RESCORED	RESCORED — CVE-2019-15903. CVSS 6.5 → 7.5 (NVD).

Affected

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

Weaknesses

CWE-125 · CWE-776

References (60)

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00080.html [Mailing List, Third Party Advisory]
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00081.html [Mailing List, Third Party Advisory]
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00000.html [Mailing List, Third Party Advisory]
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00002.html [Mailing List, Third Party Advisory]
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00003.html [Mailing List, Third Party Advisory]
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00013.html [Mailing List, Third Party Advisory]
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00016.html [Mailing List, Third Party Advisory]
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00017.html [Mailing List, Third Party Advisory]
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00018.html [Mailing List, Third Party Advisory]
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00019.html [Mailing List, Third Party Advisory]
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00008.html [Mailing List, Third Party Advisory]
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html [Mailing List, Third Party Advisory]
http://packetstormsecurity.com/files/154503/Slackware-Security-Advisory-expat-Updates.html [Third Party Advisory, VDB Entry]
http://packetstormsecurity.com/files/154927/Slackware-Security-Advisory-python-Updates.html [Third Party Advisory, VDB Entry]
http://packetstormsecurity.com/files/154947/Slackware-Security-Advisory-mozilla-firefox-Updates.html [Third Party Advisory, VDB Entry]
http://seclists.org/fulldisclosure/2019/Dec/23 [Mailing List, Third Party Advisory]
http://seclists.org/fulldisclosure/2019/Dec/26 [Mailing List, Third Party Advisory]
http://seclists.org/fulldisclosure/2019/Dec/27 [Mailing List, Third Party Advisory]
http://seclists.org/fulldisclosure/2019/Dec/30 [Mailing List, Third Party Advisory]
https://access.redhat.com/errata/RHSA-2019:3210 [Third Party Advisory]
https://access.redhat.com/errata/RHSA-2019:3237 [Third Party Advisory]
https://access.redhat.com/errata/RHSA-2019:3756 [Third Party Advisory]
https://cert-portal.siemens.com/productcert/html/ssa-398330.html
https://github.com/libexpat/libexpat/commit/c20b758c332d9a13afbbb276d30db1d183a85d43 [Patch, Third Party Advisory]
https://github.com/libexpat/libexpat/issues/317 [Exploit, Issue Tracking, Third Party Advisory]
https://github.com/libexpat/libexpat/issues/342 [Third Party Advisory]
https://github.com/libexpat/libexpat/pull/318 [Issue Tracking, Patch, Third Party Advisory]
https://lists.debian.org/debian-lts-announce/2019/11/msg00006.html [Mailing List, Third Party Advisory]
https://lists.debian.org/debian-lts-announce/2019/11/msg00017.html [Mailing List, Third Party Advisory]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A4TZKPJFTURRLXIGLB34WVKQ5HGY6JJA/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BDUTI5TVQWIGGQXPEVI4T2ENHFSBMIBP/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S26LGXXQ7YF2BP3RGOWELBFKM6BHF6UG/
https://seclists.org/bugtraq/2019/Dec/17 [Mailing List, Third Party Advisory]
https://seclists.org/bugtraq/2019/Dec/21 [Mailing List, Third Party Advisory]
https://seclists.org/bugtraq/2019/Dec/23 [Mailing List, Third Party Advisory]
https://seclists.org/bugtraq/2019/Nov/1 [Mailing List, Third Party Advisory]
https://seclists.org/bugtraq/2019/Nov/24 [Mailing List, Third Party Advisory]
https://seclists.org/bugtraq/2019/Oct/29 [Mailing List, Third Party Advisory]
https://seclists.org/bugtraq/2019/Sep/30 [Mailing List, Third Party Advisory]
https://seclists.org/bugtraq/2019/Sep/37 [Mailing List, Third Party Advisory]
https://security.gentoo.org/glsa/201911-08 [Third Party Advisory]
https://security.netapp.com/advisory/ntap-20190926-0004/ [Third Party Advisory]
https://support.apple.com/kb/HT210785 [Third Party Advisory]
https://support.apple.com/kb/HT210788 [Third Party Advisory]
https://support.apple.com/kb/HT210789 [Third Party Advisory]
https://support.apple.com/kb/HT210790 [Third Party Advisory]
https://support.apple.com/kb/HT210793 [Third Party Advisory]
https://support.apple.com/kb/HT210794 [Third Party Advisory]
https://support.apple.com/kb/HT210795 [Third Party Advisory]
https://usn.ubuntu.com/4132-1/ [Third Party Advisory]
https://usn.ubuntu.com/4132-2/ [Third Party Advisory]
https://usn.ubuntu.com/4165-1/ [Third Party Advisory]
https://usn.ubuntu.com/4202-1/ [Third Party Advisory]
https://usn.ubuntu.com/4335-1/ [Third Party Advisory]
https://www.debian.org/security/2019/dsa-4530 [Third Party Advisory]
https://www.debian.org/security/2019/dsa-4549 [Third Party Advisory]
https://www.debian.org/security/2019/dsa-4571 [Third Party Advisory]
https://www.oracle.com/security-alerts/cpuapr2020.html [Third Party Advisory]
https://www.oracle.com/security-alerts/cpuoct2020.html [Third Party Advisory]
https://www.tenable.com/security/tns-2021-11 [Third Party Advisory]

Authoritative record: CVE-2019-15903 at cve.org

Weaknesses: CWE-125 · CWE-776

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2019-15903 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 Monday, October 19, 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.