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. CREATE(Triage):(User=admin) CVE-2019-15903 (https://nvd.nist.gov/vuln/detail/CVE-2019-15903)
