Vulnerability details
CVE-2026-30976
Sonarr Path Traversal vulnerability
Official description
Sonarr is a PVR for Usenet and BitTorrent users. In versions on the 4.x branch prior to 4.0.17.2950, an unauthenticated remote attacker can potentially read any file readable by the Sonarr process. These include application configuration files (containing API keys and database credentials), Windows system files, and any user-accessible files on the same drive This issue only impacts Windows systems; macOS and Linux are unaffected. Files returned from the API were not limited to the directory on disk they were intended to be served from. This problem has been patched in 4.0.17.2950 in the nightly/develop branch or 4.0.17.2952 for stable/main releases. It's possible to work around the issue by only hosting Sonarr on a secure internal network and accessing it via VPN, Tailscale or similar solution outside that network.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.6High | 3.1 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Sonarr | Sonarr | >= 4.0, < 4.0.17.2950 | CVEProject cvelistV5 (CNA) |
References and advisories
3- https://github.com/Sonarr/Sonarr/security/advisories/GHSA-h393-v5hm-6h8f x_refsource_CONFIRM
- https://github.com/Sonarr/Sonarr/releases/tag/v4.0.17.2950 x_refsource_MISC
- https://github.com/Sonarr/Sonarr/releases/tag/v4.0.17.2952 x_refsource_MISC
Details
- Published
- 2026-03-26
- Last updated
- 2026-03-26
- State
- Published
- Assigner (CNA)
- GitHub_M
Exploit prediction (EPSS)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')