VULNERABILITY INTELLIGENCE

CVE-2019-15903

CVSS score7.5 HIGH
EPSS probability6.64%
CISA KEVNot currently listed
Published2019-09-04
Last modified2026-10-14
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Weakness classification

  • CWE-125: Out-of-bounds Read
  • CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

Primary references