This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-89087 →

UBUNTU-CVE-2026-89087

The cstruct package before 6.3.0 for OCaml mishandles indexes.

Original description

The description as published by the source.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Ubuntu:22.04:LTS ocaml-cstruct

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Ubuntu:24.04:LTS ocaml-cstruct

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Ubuntu:26.10 ocaml-cstruct

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Ubuntu:26.04:LTS ocaml-cstruct

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]