CVE-2026-34353
OCaml Bigarray Integer Overflow Arbitrary Memory Reading Vulnerability
Description
In OCaml through 4.14.3, Bigarray.reshape allows an integer overflow, and resultant reading of arbitrary memory, when untrusted data is processed.
INFO
Published Date :
March 27, 2026, 6:16 a.m.
Last Modified :
April 14, 2026, 6:43 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 8254265b-2729-46b6-b9e3-3dfca2d5bfca | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update OCaml to a patched version.
- Avoid processing untrusted data with Bigarray.reshape.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-34353.
| URL | Resource |
|---|---|
| https://github.com/ocaml/ocaml/issues/14655 | Issue Tracking |
| https://github.com/ocaml/ocaml/pull/14674 | Issue Tracking |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-34353 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-34353
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-34353 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-34353 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 14, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Added CPE Configuration OR *cpe:2.3:a:ocaml:ocaml:*:*:*:*:*:*:*:* versions up to (including) 4.14.3 Added Reference Type MITRE: https://github.com/ocaml/ocaml/issues/14655 Types: Issue Tracking Added Reference Type MITRE: https://github.com/ocaml/ocaml/pull/14674 Types: Issue Tracking -
New CVE Received by [email protected]
Mar. 27, 2026
Action Type Old Value New Value Added Description In OCaml through 4.14.3, Bigarray.reshape allows an integer overflow, and resultant reading of arbitrary memory, when untrusted data is processed. Added CVSS V3.1 AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N Added CWE CWE-190 Added Reference https://github.com/ocaml/ocaml/issues/14655 Added Reference https://github.com/ocaml/ocaml/pull/14674