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I. Basic Information for CVE-2026-30975
Vulnerability Information

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Vulnerability Title
Sonarr Authentication Bypass vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用欺骗进行的认证绕过
Source: NVD (National Vulnerability Database)
Vulnerability Title
Sonarr 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sonarr是Sonarr公司的一款可帮助查找、下载和组织电视节目的软件。 Sonarr 4.0.16.2942之前版本存在安全漏洞,该漏洞源于身份验证绕过问题,可能影响为本地地址禁用身份验证的用户。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
SonarrSonarr < 4.0.16.2942 -
II. Public POCs for CVE-2026-30975
#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
kimi-k2.5 · 9185 chars
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III. Intelligence Information for CVE-2026-30975
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IV. Related Vulnerabilities
V. Comments for CVE-2026-30975

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