Ghost: Improper Authentication
CVE-2026-22594 is a high-severity improper authentication vulnerability in Ghost from TryGhost, with a CVSS 3.1 base score of 8.1 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. Affected Ghost versions: >= 6.0.0, < 6.11.0; >= 5.105.0, < 5.130.6. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 1.31% chance of exploitation within 30 days, higher than 71% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Ghost you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on github.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| TryGhost | Ghost | >= 6.0.0, < 6.11.0; >= 5.105.0, < 5.130.6 | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N. Scored by CNA (github.com).
Official description
Ghost is a Node.js content management system. In versions 5.105.0 through 5.130.5 and 6.0.0 through 6.10.3, a vulnerability in Ghost's 2FA mechanism allows staff users to skip email 2FA. This issue has been patched in versions 5.130.6 and 6.11.0.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Authentication
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
How developers prevent this class of flaw
- Use an authentication framework or library such as the OWASP ESAPI Authentication feature.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
Other vulnerabilities in Ghost
- 7.3 High severity
- 7.2 High severity
- 7.5 High severity
- 7.3 High severity
- 8.1 High severity
- 7.3 High severity
Recent Improper Authentication vulnerabilities
- 9.4 Critical severity
- 9.8 Critical severity
- 9.1 Critical severity
- 9.3 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
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