Threats Tagged 'cve-2026-27707'
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Threats Tagged 'cve-2026-27707'
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CVE-2026-27707: CWE-288: Authentication Bypass Using an Alternate Path or Channel in seerr-team seerrCVE-2026-27707 0 Seerr is an open-source media request and discovery manager for Jellyfin, Plex, and Emby. Starting in version 2.0.0 and prior to version 3.1.0, an authentication guard logic flaw in `POST /api/v1/auth/jellyfin` allows an unauthenticated attacker to register a new Seerr account on any Plex-configured instance by authenticating with an attacker-controlled Jellyfin server. The attacker receives an authenticated session and can immediately use the application with default permissions, including the ability to submit media requests to Radarr/Sonarr. Any Seerr deployment where all three of the following are true may be vulnerable: `settings.main.mediaServerType` is set to `PLEX` (the most common deployment).; `settings.jellyfin.ip` is set to `""` (default, meaning Jellyfin was never configured); and `settings.main.newPlexLogin` is set to `true` (default). Jellyfin-configured and Emby-configured deployments are not affected. Version 3.1.0 of Seerr fixes this issue. Join the discussion | CVE Database V5 | 02/27/2026, 19:29:18 UTC Added: 02/27/2026, 19:41:11 UTC |
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