Directory Traversal The advisory has been revoked - it doesn't affect any version of package opam (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1804-OPAM-16100894
- published22 Apr 2026
- disclosed16 Apr 2026
Introduced: 16 Apr 2026
CVE-2026-41082 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:18.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream opam package and not the opam package as distributed by Ubuntu.
In OCaml opam before 2.5.1, a .install field containing a destination filepath can use ../ to reach a parent directory.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2026-41082
- https://github.com/ocaml/opam/pull/6897
- https://github.com/ocaml/opam/releases/tag/2.5.1
- https://lists.debian.org/debian-lts-announce/2026/04/msg00021.html
- https://access.redhat.com/security/cve/CVE-2026-41082
- https://bugzilla.redhat.com/show_bug.cgi?id=2459003
- https://osv.dev/vulnerability/OSEC-2026-03
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41082.json