CVE-2026-70594: Ghost: Session Fixation in Ghost Admin
Impact
Ghost Admin did not invalidate existing sessions on login which could have allowed for session fixation attacks. Successful exploitation would have required another vulnerability on the same domain where Ghost Admin was hosted.
Vulnerable versions
This vulnerability is present in Ghost from v2.2.0 to v6.54.0.
Patches
v6.54.1 contains a fix for this issue.
How to update
For self-hosters using Docker, find Docker's official Ghost image here. Updating a Docker-based Ghost instance is documented here.
If your Ghost is a Ghost-CLI install see our documentation on updating it to the latest version here.
References
Ghost thanks meifukun for disclosing this vulnerability responsibly.
For more information
If you have any questions or comments about this advisory, email Ghost at security@ghost.org.
Other sources
Ghost is a Node.js content management system. From 2.2.0 until 6.54.1, Ghost Admin did not invalidate existing sessions on login which could have allowed for session fixation attacks. Successful exploitation would have required another vulnerability on the same domain where Ghost Admin was hosted. This issue is fixed in version 6.54.1.
— MITRE
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
npm/ghostto a version that resolves this vulnerability.Fixed in 6.54.1 - Upgrade
Upgrade
Ghost (Node.js CMS)to a version that resolves this vulnerability.Fixed in 6.54.1
Event History
Frequently Asked Questions
What is the severity of CVE-2026-70594?
The severity of CVE-2026-70594 is medium with a score of 6.7.
What impact does CVE-2026-70594 have?
CVE-2026-70594 can allow for session fixation attacks due to existing sessions not being invalidated upon login.
How can I fix CVE-2026-70594?
To fix CVE-2026-70594, you should update to the latest version of Ghost that includes the necessary security patches.
What is the risk associated with CVE-2026-70594?
CVE-2026-70594 has a risk level of 56, indicating a medium-level concern for security.
Which software is affected by CVE-2026-70594?
CVE-2026-70594 affects the Ghost blogging platform, specifically in its admin interface.