---
id: CVE-2026-57825
title: >-
  In the opam package before 2.5.2 for OCaml, the sandbox protection mechanism
  can be bypassed because symlinks are mishandled during use of .install files.
summary: >-
  In the opam package before 2.5.2 for OCaml, the sandbox protection mechanism
  can be bypassed because symlinks are mishandled during use of .install files.
severity: medium
cvss: 5.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N'
cwe:
  - CWE-61
vendor: OCaml
product: opam
affected:
  - opam < 2.5.2
published: '2026-09-09'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T16:17:15.167'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-57825'
references:
  - url: 'https://github.com/ocaml/opam/releases'
    label: cve@mitre.org
  - url: 'https://osv.dev/vulnerability/OSEC-2026-10'
    label: cve@mitre.org
  - url: 'https://lists.debian.org/debian-lts-announce/2026/07/msg00026.html'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - cve.org
epss: 0.00472
epssPercentile: 0.38241
ingestedAt: '2026-09-14T08:55:47.358Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-14T15:37:34.957373Z'
---

## Overview

In the opam package before 2.5.2 for OCaml, the sandbox protection mechanism can be bypassed because symlinks are mishandled during use of .install files.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.