CVE-2026-41401

libyang before 5.2.6 contains a heap use-after-free write vulnerability in lydparsersetdataflags that incorrectly updates metadata list pointers when freeing non-head default metadata entries. Attackers can trigger this vulnerability by submitting crafted YANG XML documents with specific metadata...

PT-2026-43252

Name of the Vulnerable Software and Affected Versions libyang versions prior to 5.2.6 Description A heap use-after-free write occurs in the lyd parser set data flags function. This happens when the software incorrectly updates metadata list pointers while freeing non-head default metadata entries...