GHSA-g54x-7hpm-29q8

GHSA-g54x-7hpm-29q8 PUBLISHED CVSS 7.900000095367432 HIGH

Record from GitHub Advisory Database · Published February 27, 2026

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.

Risk scores

CVSS 3.1

7.900000095367432

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N

Timeline

Feb 27, 2026 CVE Published
Apr 10, 2026 Security Advisory

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vulnetix vdb vuln GHSA-g54x-7hpm-29q8
vulnetix vdb fixes GHSA-g54x-7hpm-29q8

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  "https://api.vdb.vulnetix.com/v2/vuln/GHSA-g54x-7hpm-29q8/fixes/registry"

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