# CVE-2023-50266: Bazarr Blind Server-Side Request Forgery (SSRF) in the /test/<protocol>/ endpoint

> Attackers can exploit unvalidated input in the test endpoint to force the server to make arbitrary GET requests, potentially accessing internal resources.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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:** 15 Dec 2023
- **Updated:** 2 Aug 2024

## What is CVE-2023-50266?

CVE-2023-50266 is a medium-severity server-side request forgery vulnerability in morpheus65535 bazarr, published on 15 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Bazarr manages and downloads subtitles. In version 1.2.4, the proxy method in bazarr/bazarr/app/ui.py does not validate the user-controlled protocol and url variables and passes them to requests.get() without any sanitization, which leads to a blind server-side request forgery (SSRF). This issue allows for crafting GET requests to internal and external resources on behalf of the server. 1.3.1 contains a partial fix, which limits the vulnerability to HTTP/HTTPS protocols.

Weakness: CWE-918 (Server-Side Request Forgery)

## Which versions are affected by CVE-2023-50266?

It affects 1 product.


Products: Bazarr Bazarr.

## How do I fix CVE-2023-50266?

No fix has been published for CVE-2023-50266 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-50266 being exploited?

There is no known exploitation of CVE-2023-50266 in the wild and no public exploit code.

## Other vulnerabilities in morpheus65535 bazarr

- [CVE-2024-40348](https://insights.sbomify.com/CVE-2024-40348/): Path traversal in n/a (high 8.2)
- [CVE-2023-50264](https://insights.sbomify.com/CVE-2023-50264/): Bazarr Arbitrary file read in /system/backup/download/ endpoint (high 7.5)
- [CVE-2023-50265](https://insights.sbomify.com/CVE-2023-50265/): Bazarr Arbitrary file read in /api/swaggerui/static endpoint (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-50266 and fix it if it is affected.

What it is: CVE-2023-50266 is a medium-severity server-side request forgery vulnerability in morpheus65535 bazarr, published on 15 Dec 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-2023-50266 in the wild and no public exploit code.

Affected product: morpheus65535 bazarr. 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-2023-50266/ (Markdown: https://insights.sbomify.com/CVE-2023-50266/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-50266
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-50266
- OSV: https://osv.dev/vulnerability/CVE-2023-50266

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-50266/
Summaries are generated and may contain mistakes; the official description above is the record.