Description
Sonarr is a PVR for Usenet and BitTorrent users. Versions prior to 4.0.16.2942 have an authentication bypass that affected users that had disabled authentication for local addresses (Authentication Required set to: `Disabled for Local Addresses`) without a reverse proxy running in front of Sonarr that didn't not pass through the invalid header. Patches are available in version 4.0.16.2942 in the nightly/develop branch and version 4.0.16.2944 for stable/main releases. Some workarounds are available. Make sure Sonarr's Authentication Required setting is set to `Enabled`, run Sonarr behind a reverse proxy, and/or do not expose Sonarr directly to the internet and instead rely on accessing it through a VPN, Tailscale or a similar solution.
INFO
Published Date :
2026-03-25T21:08:15.426Z
Last Modified :
2026-03-26T15:23:38.612Z
Source :
GitHub_M
AFFECTED PRODUCTS
The following products are affected by CVE-2026-30975 vulnerability.
| Vendors | Products |
|---|---|
| Sonarr |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2026-30975.
