GHSA-xm43-3m56-w3wf
MEDIUMGHSA-xm43-3m56-w3wf is a medium-severity (CVSS 5.3) CWE-472 vulnerability in ghost. O3 Security confirms whether GHSA-xm43-3m56-w3wf is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Ghost: Paid gift memberships obtainable at minimal cost via the donations feature
Blast Radius
Weekly download volume for affected packages — a proxy for how broadly this vulnerability is deployed.
ghostnpmDescription
Impact
A vulnerability in Ghost's public donation checkout flow allowed an unauthenticated attacker to obtain full paid gift memberships for a minimal payment. No customer or member data was exposed, and the issue could not be used to steal money from a site or its members.
Vulnerable versions
This vulnerability is present in Ghost from v6.27.0 up to v6.43.1.
Patches
v6.44.0 contains a fix for this issue.
How to update
For self-hosters using Docker, find Docker’s official Ghost image on Docker Hub and follow the documentation on updating a Docker-based Ghost instance.
For self-hosters using Ghost-CLI, see the documentation for updating Ghost to the latest version.
Workarounds
If upgrading immediately is not possible, you can remove the vulnerable checkout path by disabling the donations feature in Ghost Admin under Settings → Membership → Tips & donations until the upgrade is applied.
References
Ghost thanks sane100400 and p4p3r for disclosing this vulnerability responsibly.
For more information
If you have any questions or comments about this advisory, email Ghost at [email protected].
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | ghost | ≥ 6.27.0&&< 6.44.0 | 6.44.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ghost. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update ghost to 6.44.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-xm43-3m56-w3wf is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-xm43-3m56-w3wf is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-xm43-3m56-w3wf. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-xm43-3m56-w3wf in your dependencies?
O3 detects GHSA-xm43-3m56-w3wf across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.