Medium severity · published Mar 27, 2026
CVE-2026-34353
In OCaml through 4.14.3, Bigarray.reshape allows an integer overflow, and resultant reading of arbitrary memory, when untrusted data is processed
5.1
CVSS
0.1%
EPSS
No
On KEV
Description
In OCaml through 4.14.3, Bigarray.reshape allows an integer overflow, and resultant reading of arbitrary memory, when untrusted data is processed.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Local
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 2% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OC
OCaml · OCaml
through 4.14.3 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-34353
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-34353
Issue Tracking
https://github.com/ocaml/ocaml/issues/14655
Issue Tracking
https://github.com/ocaml/ocaml/pull/14674
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