Ghost's improper authentication allows access to member information and actions
Impact
Improper authentication on some endpoints used for member actions would allow an attacker to perform member-only actions, and read member information.
Vulnerable versions
This security vulnerability is present in Ghost v4.46.0-v5.89.5.
Ghost(Pro) customers are automatically updated to fixed versions ahead of disclosure.
If you're a self-hoster, please follow our update instructions.
Patches
v5.89.5 contains a fix for this issue.
Workarounds
Disable site membership in Ghost settings.
For more information
If you have any questions or comments about this advisory:
- Email us at security@ghost.org
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | ghost | >= 4.46.0, < 5.89.5 | 5.89.5 |
| npm package | @tryghost/portal | >= 1.22.2, < 2.39.0 | 2.39.0 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N- Weakness (CWE)
CWE-284, CWE-287- Platform
- npm
- Package
ghost, @tryghost/portal- Disclosed
- 20.08.2024
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-78x2-cwp9-5j42 - CC BY 4.0
Vulnerability history: @tryghost/portal
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 08.2024 01.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 1
- Medium 1
Disclosures per year
- 2024: 1
- 2025: 0
- 2026: 1
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