JLSEC-2026-1236

libexpat before 2.8.2 does not consider XMLTOKDATACHARS in doCdataSection and thus lacks handler call depth tracking for various calls from within handlers in cases of a policy violation. Thus, a use-after-free can occur. NOTE: this issue exists because of an incomplete fix for CVE-2026-50219...

OESA-2026-2973 expat security update

expat is a stream-oriented XML parser library written in C. expat excels with files too large to fit RAM, and where performance and flexibility are crucial. Security Fixes: libexpat before 2.8.2 has an integer overflow in storeAtts.CVE-2026-56403 libexpat before 2.8.2 has an integer overflow in...

CVE-2026-56412

In the connected CVE data, libexpat before 2.8.2 is affected: the XML_TOK_DATA_CHARS handling in doCdataSection lacks proper handler call depth tracking, enabling a use-after-free under certain policy violations. This stems from an incomplete fix for CVE-2026-50219. CVSS indicates LOCAL attack ve...