What is CVE-2026-30976?

CVE-2026-30976 is a high-severity vulnerability in Sonarr, classified under Path Traversal. CVSS score: 8.6/10. Published 2026-03-25.

How severe is CVE-2026-30976?

High severity. CVSS v3 base score is 8.6 out of 10.

Path Traversal in Sonarr

CVE-2026-30976

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 f…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.000 (6.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.

Affected products

Sonarr — versions >= 4.0, < 4.0.17.2950

Weakness classification (CWE)

CWE-22 — Path Traversal

References

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)

Frequently asked questions

What is CVE-2026-30976?: CVE-2026-30976 is a high-severity vulnerability in Sonarr, classified under Path Traversal. CVSS score: 8.6/10. Published 2026-03-25.
How severe is CVE-2026-30976?: High severity. CVSS v3 base score is 8.6 out of 10.