CVE-2026-50219

4.9MEDIUM

Key Information:

Vendor

Libexpat Project

Status
Libexpat
Vendor
CVE Published:
4 June 2026

What is CVE-2026-50219?

libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_GetBuffer, XML_Parse, XML_ParseBuffer, XML_ParserFree, or XML_ParserReset from within handlers in cases of a policy violation. Thus, a use-after-free can occur,

Affected Version(s)

libexpat 0 < 2.8.2

References

https://github.com/libexpat/libexpat/pull/1246

CVSS V3.1

Score:
4.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.