# CVE-2024-43409: Ghost's improper authentication allows access to member information and actions

> Attackers can bypass authentication to access member information and perform member-only actions in Ghost CMS.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 20 Aug 2024
- **Updated:** 3 Sep 2024
- **Also known as:** BIT-ghost-2024-43409, GHSA-78x2-cwp9-5j42

## What is CVE-2024-43409?

CVE-2024-43409 is a medium-severity authentication bypass vulnerability in TryGhost Ghost, published on 20 Aug 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Ghost is a Node.js content management system. Improper authentication on some endpoints used for member actions would allow an attacker to perform member-only actions, and read member information. This security vulnerability is present in Ghost v4.46.0-v5.89.4. v5.89.5 contains a fix for this issue.

Weakness: CWE-287 (Improper Authentication), CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2024-43409?

5 open source packages ship an affected version, including @tryghost/portal and ghost. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `@tryghost/portal` | npm | From 1.22.2 | 2.39.0 |
| `@tryghost/portal` | npm | From 1.22.2 | 2.39.0 |
| `ghost` | Bitnami | From 4.46.0 | 5.89.5 |
| `ghost` | npm | From 4.46.0 | 5.89.5 |
| `ghost` | npm | From 4.46.0 | 5.89.5 |

Products: Ghost Ghost.

## How do I fix CVE-2024-43409?

Upgrade @tryghost/portal to 2.39.0 or later.

## Is CVE-2024-43409 being exploited?

There is no known exploitation of CVE-2024-43409 in the wild and no public exploit code.

## Other vulnerabilities in TryGhost Ghost

- [CVE-2022-27139](https://insights.sbomify.com/CVE-2022-27139/): Arbitrary file upload in Ghost (critical 9.8)
- [CVE-2022-28397](https://insights.sbomify.com/CVE-2022-28397/): Arbitrary file upload in Ghost (critical 9.8)
- [CVE-2022-41654](https://insights.sbomify.com/CVE-2022-41654/): ghost vulnerable to unauthorized newsletter modification via improper access controls (critical 9.6)
- [CVE-2026-26980](https://insights.sbomify.com/CVE-2026-26980/): Ghost has a SQL Injection in its Content API (critical 9.4)
- [CVE-2024-34451](https://insights.sbomify.com/CVE-2024-34451/): Security feature bypass in n/a (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-43409 and fix it if it is affected.

What it is: CVE-2024-43409 is a medium-severity authentication bypass vulnerability in TryGhost Ghost, published on 20 Aug 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-43409 in the wild and no public exploit code.

Affected packages and fixed versions:
- @tryghost/portal (npm): affected from 1.22.2; fixed in 2.39.0
- @tryghost/portal (npm): affected from 1.22.2; fixed in 2.39.0
- ghost (Bitnami): affected from 4.46.0; fixed in 5.89.5
- ghost (npm): affected from 4.46.0; fixed in 5.89.5
- ghost (npm): affected from 4.46.0; fixed in 5.89.5

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-43409/ (Markdown: https://insights.sbomify.com/CVE-2024-43409/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-43409
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-43409
- OSV: https://osv.dev/vulnerability/CVE-2024-43409

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-43409/
Summaries are generated and may contain mistakes; the official description above is the record.