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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00312.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
OCaml opam unaffected
Version Status Constraints
0 affected < 2.5.2

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

No data.

Project Subscriptions

No data.

Advisories
Source ID Title
Debian DLA Debian DLA DLA-4684-1 opam security update
Debian DSA Debian DSA DSA-6386-1 opam security update
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/ocaml/opam/releases cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2026/07/msg00026.html cve-icon
https://osv.dev/vulnerability/OSEC-2026-10 cve-icon cve-icon
History

Wed, 09 Sep 2026 12:15:00 +0000

Type Values Removed Values Added
Title Sandbox Bypass via Symlink Mishandling in opam .install Files

Wed, 09 Sep 2026 05:30:00 +0000

Type Values Removed Values Added
References

Wed, 09 Sep 2026 03:45:00 +0000

Type Values Removed Values Added
Description 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.
Weaknesses CWE-61
References
Metrics cvssV3_1

{'score': 5.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N'}

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-09-09T04:12:39.763Z

Reserved: 2026-06-25T00:00:00.000Z

Link: CVE-2026-57825

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-09-09T04:18:01.720

Modified: 2026-09-09T16:04:24.933

Link: CVE-2026-57825

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-09T12:00:08Z

Weaknesses