CVE-2026-88351
NONE—CVSS v3
—CVSS v2
—
EPSS (exploit probability)
—CWE
Description
An integer overflow vulnerability exists in the MPack Node API in MPack 1.1.1 on 32-bit platforms. When parsing a specially crafted MessagePack array32 or map32 object with an excessively large element count, the page allocation size calculation in mpack_tree_parse_children() can overflow size_t and produce an undersized allocation. Subsequent parsing writes mpack_node_data_t records beyond the allocated heap buffer, resulting in heap-buffer-overflow, memory corruption, and denial of service.
Affected routers (0)
No routers currently mapped to this CVE in our database.