Vulnerability · Published Mar 27, 2026 · Assigned by mitre
CVE-2026-34353
Medium 5.9
In plain English
A medium-severity integer overflow in OCaml from OCaml. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.9Medium
Exploit odds (30 days)0.1%top 98.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
In OCaml through 4.14.3, Bigarray.reshape allows an integer overflow, and resultant reading of arbitrary memory, when untrusted data is processed.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.24 | ocaml | 4.14.4-r0 | ALPINE-CVE-2026-34353 |
| Debian:12 | ocaml | no fix listed | DEBIAN-CVE-2026-34353 |
| Debian:13 | ocaml | 5.2.0-1 | DEBIAN-CVE-2026-34353 |
| Debian:14 | ocaml | 5.2.0-1 | DEBIAN-CVE-2026-34353 |
| Ubuntu:22.04:LTS | ocaml | no fix listed | UBUNTU-CVE-2026-34353 |
| Ubuntu:24.04:LTS | ocaml | no fix listed | UBUNTU-CVE-2026-34353 |
Affected products (as reported)
Weakness: CWE-190 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N