What is CVE-2026-44183?

CVE-2026-44183 is a critical-severity vulnerability in Cleanuparr, classified under Authentication Bypass by Spoofing. CVSS score: 9.8/10. Published 2026-05-12.

How severe is CVE-2026-44183?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Cleanuparr

CVE-2026-44183

Cleanuparr is a tool for automating the cleanup of unwanted or blocked files in Sonarr, Radarr, and supported download clients like qBittorrent. Prior to 2.9.10, TrustedNetworkAuthenticationHandler.ResolveClientIp parses the leftmost entr…

EPSS: 0.000 (15.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Cleanuparr — versions < 2.9.10

Weakness classification (CWE)

CWE-290 — Authentication Bypass by Spoofing
CWE-348

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-44183?: CVE-2026-44183 is a critical-severity vulnerability in Cleanuparr, classified under Authentication Bypass by Spoofing. CVSS score: 9.8/10. Published 2026-05-12.
How severe is CVE-2026-44183?: Critical severity. CVSS v3 base score is 9.8 out of 10.