CVE-2026-28364

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Source
https://cve.org/CVERecord?id=CVE-2026-28364
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-28364.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-28364
Aliases
Downstream
Related
Published
2026-02-27T04:16:03.410Z
Modified
2026-03-23T05:02:05.660463598Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

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

Affected packages

Git / github.com/ocaml/ocaml

Affected ranges

Type
GIT
Repo
https://github.com/ocaml/ocaml
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
ce529ce4255a8a057357647fe385c03b0132fdbe
Introduced
e86f9e5d41217e8c824455206e854072b803b170
Fixed
152d7ca5dd2c67ecfece73f91aea5697f95178a5
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "4.14.3"
        },
        {
            "introduced": "5.0.0"
        },
        {
            "fixed": "5.4.1"
        }
    ]
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-28364.json"