Description
On Unix systems, opening a file in an os.Root improperly follows symlinks to locations outside of the Root when the final path component of the a path is a symbolic link and the path ends in /. For example, 'root.Open("symlink/")' will open "symlink" even when "symlink" is a symbolic link pointing outside of the root.
Published: 2026-07-08
Score: 7.8 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Wed, 08 Jul 2026 20:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-61
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Wed, 08 Jul 2026 17:45:00 +0000

Type Values Removed Values Added
First Time appeared Go Standard Library
Go Standard Library os
Vendors & Products Go Standard Library
Go Standard Library os

Wed, 08 Jul 2026 16:30:00 +0000

Type Values Removed Values Added
Description On Unix systems, opening a file in an os.Root improperly follows symlinks to locations outside of the Root when the final path component of the a path is a symbolic link and the path ends in /. For example, 'root.Open("symlink/")' will open "symlink" even when "symlink" is a symbolic link pointing outside of the root.
Title Root escape via symlink plus trailing slash in os
References

Subscriptions

Go Standard Library Os
cve-icon MITRE

Status: PUBLISHED

Assigner: Go

Published:

Updated: 2026-07-08T19:39:17.341Z

Reserved: 2026-04-07T18:13:03.527Z

Link: CVE-2026-39822

cve-icon Vulnrichment

Updated: 2026-07-08T18:05:38.120Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-08T17:30:03Z

Weaknesses