OCaml cstruct Package Vulnerability Affecting Version 6.3.0 and Below
CVE-2026-89087

7.3HIGH

Key Information:

Vendor

Ocaml

Status
Cstruct
Vendor
CVE Published:
10 September 2026

What is CVE-2026-89087?

The cstruct package prior to version 6.3.0 for OCaml has a vulnerability that arises from improper handling of indexes. This flaw may lead to unexpected behavior and could potentially be exploited in various security contexts. Users are advised to update to version 6.3.0 or later to mitigate any risks associated with this issue.

Affected Version(s)

cstruct 0 < 6.3.0

References

https://osv.dev/vulnerability/OSEC-2026-20

CVSS V3.1

Score:
7.3
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.