CVE-2019-15903

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.

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

6.6% chance of exploitation in the next 30 days; higher than 93% of CVEs (scores of 2026-10-25)

CWEs

CWE-125, CWE-776

Published

2019-09-04

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• libexpat_project:libexpat
• python:python

References

• http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00080.html
• http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00081.html
• http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00000.html
• http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00002.html
• http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00003.html

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