Is CVE-2026-30976 actively exploited?

No active exploitation of CVE-2026-30976 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-30976 be exploited remotely?

Yes. CVE-2026-30976 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-30976?

CVE-2026-30976 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2026-30976

HIGH

CVE-2026-30976

CWE-22Published: March 25, 2026· Updated: Mar 30, 2026

7.5

CVSS v3.1

EPSS:0.06%probability of exploitation in 30 daysPercentile:19.3th

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.

NVD Source

Technical Analysis

CVE-2026-30976 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.