GHSA-4wx2-7gvj-qfq3: Input Validation
Impact
A missing validation check allowed users to redeem subscription offers that were no longer active.
Vulnerable versions
This vulnerability is present in Ghost from v4.22.0 up 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 Pedro Pinho for disclosing this vulnerability responsibly.
For more information
If you have any questions or comments about this advisory, email us at security@ghost.org.
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
Ghostto a version that resolves this vulnerability.Fixed in 6.54.1
Event History
Frequently Asked Questions
What is the severity of GHSA-4wx2-7gvj-qfq3?
The severity of GHSA-4wx2-7gvj-qfq3 is medium with a score of 4.8.
How do I fix GHSA-4wx2-7gvj-qfq3?
To fix GHSA-4wx2-7gvj-qfq3, update to Ghost version 6.54.1 or later.
What versions of Ghost are vulnerable to GHSA-4wx2-7gvj-qfq3?
Ghost versions from 4.22.0 up to 6.54.0 are vulnerable to GHSA-4wx2-7gvj-qfq3.
What kind of impact does GHSA-4wx2-7gvj-qfq3 have?
GHSA-4wx2-7gvj-qfq3 allows users to redeem inactive subscription offers due to a missing validation check.
What is the root cause of GHSA-4wx2-7gvj-qfq3?
The root cause of GHSA-4wx2-7gvj-qfq3 is an input validation issue.