CVE-2026-105675: CWE-203: Observable Discrepancy in TryGhost Ghost
Description
Ghost versions from 4.39.0 up to but not including 6.64.0 contain a vulnerability where staff users with permission to view staff invites can discover secret tokens of pending invites, including those for roles with higher privileges. This flaw allows privilege escalation by accepting pending invites with elevated roles. The issue is fixed in version 6.64.0.
CVSS v3.1
Score 7.5high
Affected software
TryGhost
Ghost
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Ghost, a Node.js content management system, has a vulnerability (CVE-2026-105675) classified under CWE-203 (Observable Discrepancy) and CWE-943. From versions 4.39.0 through 6.63.x, staff users who can view staff invites can access secret tokens of pending invites, including those for roles with higher privileges than their own. This exposure enables privilege escalation by accepting these invites. The vulnerability is resolved in version 6.64.0.
Potential Impact
An attacker with staff user permissions to view staff invites can escalate their privileges by obtaining secret tokens for pending invites with higher roles and accepting them. This leads to a complete compromise of confidentiality, integrity, and availability within the affected Ghost instance.
Mitigation Recommendations
Upgrade Ghost to version 6.64.0 or later, where this vulnerability is fixed. No other mitigations are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-10-05T17:48:58.626Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ac3f8302cdf04f6563003e5
Added to database: 10/05/2026, 19:19:12 UTC
Last enriched: 10/05/2026, 19:33:17 UTC
Last updated: 10/05/2026, 19:34:03 UTC
Views: 8
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