In OCaml opam before 2.5.1, a .install field containing a destination filepath can use ../ to reach a parent directory.
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41082.json
https://osv.dev/vulnerability/OSEC-2026-03
https://lists.debian.org/debian-lts-announce/2026/04/msg00021.html
https://access.redhat.com/security/cve/CVE-2026-41082
https://github.com/ocaml/opam/releases/tag/2.5.1
https://github.com/ocaml/opam/pull/6897
https://bugzilla.redhat.com/show_bug.cgi?id=2459003
Source: Mitre, NVD
Published: 2026-04-16
Updated: 2026-07-08
Base Score: 7.2
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
Severity: High
Base Score: 7.8
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS: 0.00005