# CVE-2023-43793: Misskey allows users to bypass authentication of Bull dashboard

> Attackers can bypass authentication to access the Bull job queue dashboard by modifying the URL, exposing internal management features.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 4 Oct 2023
- **Updated:** 20 Sep 2024

## What is CVE-2023-43793?

CVE-2023-43793 is a high-severity authentication bypass vulnerability in misskey-dev misskey, published on 4 Oct 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Misskey is an open source, decentralized social media platform. Prior to version 2023.9.0, by editing the URL, a user can bypass the authentication of the Bull dashboard, which is the job queue management UI, and access it. Version 2023.9.0 contains a fix. There are no known workarounds.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2023-43793?

It affects 1 product.


Products: Misskey Misskey.

## How do I fix CVE-2023-43793?

No fix has been published for CVE-2023-43793 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-43793 being exploited?

There is no known exploitation of CVE-2023-43793 in the wild and no public exploit code.

## Other vulnerabilities in misskey-dev misskey

- [CVE-2025-25306](https://insights.sbomify.com/CVE-2025-25306/): Misskey's Incomplete Patch of CVE-2024-52591 Leads to Forgery of Federated Notes (critical 9.3)
- [CVE-2023-49079](https://insights.sbomify.com/CVE-2023-49079/): Misskey's missing signature validation allows arbitrary users to impersonate any remote user. (critical 9.3)
- [CVE-2026-28431](https://insights.sbomify.com/CVE-2026-28431/): Misskey lacks proper authorization checks and input validation (critical 9.2)
- [CVE-2023-52139](https://insights.sbomify.com/CVE-2023-52139/): Misskey vulnerable to improper authorization when accessing with third-party application (critical 9.1)
- [CVE-2024-52590](https://insights.sbomify.com/CVE-2024-52590/): Missing validation allows spoofed profiles in Misskey (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-43793 and fix it if it is affected.

What it is: CVE-2023-43793 is a high-severity authentication bypass vulnerability in misskey-dev misskey, published on 4 Oct 2023. 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-2023-43793 in the wild and no public exploit code.

Affected product: misskey-dev misskey. No package-level version data is available, so check the vendor advisory linked from the reference page.

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-2023-43793/ (Markdown: https://insights.sbomify.com/CVE-2023-43793/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-43793
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-43793
- OSV: https://osv.dev/vulnerability/CVE-2023-43793

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-43793/
Summaries are generated and may contain mistakes; the official description above is the record.