CVE-2026-86877

Published Oct 26, 2026 CVSS 3.1 · 6.2 Medium EPSS < 1% KEV · Not listed
Description
A path traversal issue was addressed with improved path validation. This issue is fixed in macOS Golden Gate 27. A malicious app may be able to delete files for which it does not have privileges.

Analysis

AI-generated

Technical impact

A path traversal flaw in macOS allows a malicious application to delete files without the required privileges. The vulnerability arises from insufficient path validation that permits traversal beyond intended directories, leading to unauthorized file removal. The impact is loss of data integrity and potential disruption of system functionality, as critical files may be deleted by applications that normally lack permissions.

Affected Systems

Apple macOS environments running versions prior to the Golden Gate 27 release are affected. The triviality of the issue is limited to the operating system; no third‑party products are listed as impacted.

Risk and Exploitability

The vulnerability has a CVSS score of 6.2, indicating moderate severity, an EPSS score of < 1%, and is not listed in CISA KEV. The risk depends largely on the existence of a malicious app on the system. Attackers can exploit the flaw locally by installing or running such an application, which then performs arbitrary deletions. The absence of publicly available exploit proofs or advanced attack vectors reduces immediate exploitation likelihood, but the potential for data loss warrants prompt mitigation.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Update macOS to Golden Gate 27 or later to receive the path validation fix
  • Ensure that applications are downloaded from trusted sources and run through Gatekeeper to prevent execution of malicious code
  • Limit filesystem permissions and use sandboxing to restrict application write access to sensitive directories

Generated by OpenCVE AI on November 4, 2026 at 18:05 UTC.

Tracking

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Advisories

No advisories available
References
History
Type Values Removed Values Added
CPEs cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Title macOS Path Traversal Allowing Unauthorized File Deletion
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.2, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

ssvc

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

Type Values Removed Values Added
Title macOS Path Traversal Allowing Unauthorized File Deletion
First Time appeared Apple
Apple macos
Weaknesses CWE-22
Vendors & Products Apple
Apple macos
Type Values Removed Values Added
Description A path traversal issue was addressed with improved path validation. This issue is fixed in macOS Golden Gate 27. A malicious app may be able to delete files for which it does not have privileges.
References
Weaknesses
  • CWE-22

    Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Sources

Status
PUBLISHED
Assigner
apple
Published
Updated
Nov 4, 2026, 4:06 PM
Reserved
Sep 8, 2026, 4:43 PM
Status
Analyzed
Published
Oct 26, 2026, 9:20 PM
Modified
Nov 6, 2026, 3:44 PM