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,

3 karet z 3 položek · v celém archivu · celý přehled CZ · EN/orig

CVE-2026-50219

EPSS < 0.01 EPSS k 5. 11. 2026

Hodnocení závažnosti

4.9 CVSS 3.1 mitre

útok z místního přístupu útok vyžaduje přípravu bez přihlášení bez zásahu uživatele

dopad únik části dat dílčí změna dat částečný výpadek

přesah dopad jen na zranitelnou součást

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

zvyšuje závažnost mírně zvyšuje závažnost snižuje závažnost

5. 6. 2026

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,

Information published.

EPSS < 0.01 CVE-2026-50219 libexpat US

5. 6. 2026 · Microsoft Security · 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,

5. 6. 2026

CVE-2026-56412 libexpat before 2.8.2 does not consider XML_TOK_DATA_CHARS 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.

Information published.

EPSS < 0.01 CVE-2026-50219 CVE-2026-56412 libexpat US

5. 6. 2026 · Microsoft Security · CVE-2026-56412 libexpat before 2.8.2 does not consider XML_TOK_DATA_CHARS 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.

5. 6. 2026

CVE-2026-56131 libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_ResumeParser from within handlers in cases of a policy violation. Thus, a use-after-free can occur (similar to the CVE-2026-50219 situation).

Information published.

EPSS < 0.01 CVE-2026-50219 CVE-2026-56131 libexpat US

5. 6. 2026 · Microsoft Security · CVE-2026-56131 libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_ResumeParser from within handlers in cases of a policy violation. Thus, a use-after-free can occur (similar to the CVE-2026-50219 situation).