CVE-2026-28364

Name
CVE-2026-28364
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.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
cve@mitre.org https://github.com/ocaml/security-advisories/blob/generated-osv/2026/OSEC-2026-01.json
cve@mitre.org https://osv.dev/vulnerability/OSEC-2026-01

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:ocaml:ocaml:*:*:*:*:*:*:*:* ocaml >= None < 4.14.3
cpe:2.3:a:ocaml:ocaml:*:*:*:*:*:*:*:* ocaml >= 5.0.0 < 5.4.1

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
ocaml edge-community 4.14.2-r2 omni <omni+alpine@hack.org> possibly vulnerable
ocaml edge-community 4.14.2-r1 omni <omni+alpine@hack.org> possibly vulnerable
ocaml 3.23-community 4.14.2-r2 omni <omni+alpine@hack.org> possibly vulnerable