Description
Ghost is a Node.js content management system. From 6.0.9 until 6.21.1, when making an external request, it is possible to bypass the IP filter that ensures the request isn't going to an internal service using an IPv6 literal which maps to a private IPv4 address. This vulnerability is fixed in 6.21.1.
Severity (CVSS)
| Base score | 5.8 |
|---|---|
| Severity | Medium |
| Version | CVSS 3.1 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N |
| Provided by | CNA |
Weaknesses
- CWE-184 — CWE-184: Incomplete List of Disallowed Inputs
- CWE-918 — CWE-918: Server-Side Request Forgery (SSRF)
Affected products
| Vendor | Product | Versions |
|---|---|---|
| TryGhost | Ghost | >= 6.0.9, < 6.21.1 |
References
- https://github.com/TryGhost/Ghost/security/advisories/GHSA-wvp2-4qqp-4h3r (x_refsource_CONFIRM)
Generated from the official CVE List on 25 Jun 2026 10:14 UTC.