# CVE-2024-31221: Clients removed during unpairing process may regain access if Sunshine was not restarted

> Attackers can regain unauthorized access to Sunshine game streaming after unpairing devices if the service is not restarted.

- **Severity:** Medium 5.9 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 8 Apr 2024
- **Updated:** 3 Sep 2024
- **Also known as:** GHSA-v8gw-jw28-v55m

## What is CVE-2024-31221?

CVE-2024-31221 is a medium-severity authentication bypass vulnerability in LizardByte Sunshine, published on 8 Apr 2024. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Sunshine is a self-hosted game stream host for Moonlight. Starting in version 0.10.0 and prior to version 0.23.0, after unpairing all devices in the web UI interface and then pairing only one device, all of the previously devices will be temporarily paired. Version 0.23.0 contains a patch for the issue. As a workaround, restarting Sunshine after unpairing all devices prevents the vulnerability.

Weakness: CWE-384 (Session Fixation)

## Which versions are affected by CVE-2024-31221?

It affects 1 product.


Products: Lizardbyte Sunshine.

## How do I fix CVE-2024-31221?

No fix has been published for CVE-2024-31221 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-31221 being exploited?

There is no known exploitation of CVE-2024-31221 in the wild and no public exploit code.

## Other vulnerabilities in LizardByte Sunshine

- [CVE-2026-32253](https://insights.sbomify.com/CVE-2026-32253/): Sunshine: Authentication bypass via improper client certificate validation (critical 9.8)
- [CVE-2025-53095](https://insights.sbomify.com/CVE-2025-53095/): Sunshine application-wide CSRF in the UI leads to command injection as Administrator (critical 9.7)
- [CVE-2025-10198](https://insights.sbomify.com/CVE-2025-10198/): LizardBytes Sunshine for Windows contains a DLL search-order hijacking vulnerability (high 7.8)
- [CVE-2025-10199](https://insights.sbomify.com/CVE-2025-10199/): A local privilege escalation vulnerability exists in LizardBytes' Sunshine for Windows (high 7.8)
- [CVE-2024-51738](https://insights.sbomify.com/CVE-2024-51738/): Sunshine improperly enforces pairing protocol request order (high 7.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-31221 and fix it if it is affected.

What it is: CVE-2024-31221 is a medium-severity authentication bypass vulnerability in LizardByte Sunshine, published on 8 Apr 2024. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2024-31221 in the wild and no public exploit code.

Affected product: LizardByte Sunshine. 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-2024-31221/ (Markdown: https://insights.sbomify.com/CVE-2024-31221/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-31221
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-31221
- OSV: https://osv.dev/vulnerability/CVE-2024-31221

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-31221/
Summaries are generated and may contain mistakes; the official description above is the record.