CVE-2026-88350

Medium severity, CVSS 6.2. EPSS: 0.1% chance of exploitation in the next 30 days.

An integer overflow vulnerability exists in MPack 1.1.1 in mpack_node_cstr_alloc() and mpack_node_utf8_cstr_alloc().

Published 2026-09-22. Last modified 2026-10-01.