Detections
Analytics
CVE-2026-28364
high
Description
In OCaml before 4.14.3 and 5.x before 5.4.1, a buffer over-read in Marshal deserialization (runtime/intern.c) enables remote code execution through a multi-phase attack chain. The vulnerability stems from missing bounds validation in the readblock() function, which performs unbounded memcpy() operations using attacker-controlled lengths from crafted Marshal data.
References
https://osv.dev/vulnerability/OSEC-2026-01
https://github.com/ocaml/security-advisories/blob/generated-osv/2026/OSEC-2026-01.json