{"id":"CVE-2026-54915","title":"Tautulli is a Python based monitoring and tracking tool for Plex Media Server","summary":"Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Prior to 2.17.2, the unauthenticated /auth/redirect endpoint in plexpy/webauth.py removes forward slashes from the user-controlled redirect_uri parameter but …","severity":"medium","cvss":5.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","cwe":["CWE-601"],"vendor":"Tautulli","product":"Tautulli","affected":["Tautulli < 2.17.2"],"published":"2026-09-21","updated":"2026-09-24","sourceUpdated":"2026-09-24T23:17:11.303","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-54915","references":[{"url":"https://github.com/Tautulli/Tautulli/commit/07f9beaa0286f1ab3b5e6be9726c5b2de07ee9dd","label":"security-advisories@github.com"},{"url":"https://github.com/Tautulli/Tautulli/releases/tag/v2.17.2","label":"security-advisories@github.com"},{"url":"https://github.com/Tautulli/Tautulli/security/advisories/GHSA-7c9r-fhj9-87xm","label":"security-advisories@github.com"},{"url":"https://github.com/Tautulli/Tautulli/security/advisories/GHSA-7c9r-fhj9-87xm","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-24T22:32:41.588945Z"},"epss":0.00257,"epssPercentile":0.17288,"ingestedAt":"2026-09-21T19:51:58.878Z","slug":"CVE-2026-54915","body":"## Overview\n\nTautulli is a Python based monitoring and tracking tool for Plex Media Server. Prior to 2.17.2, the unauthenticated /auth/redirect endpoint in plexpy/webauth.py removes forward slashes from the user-controlled redirect_uri parameter but leaves tab, line-feed, and carriage-return characters intact. With the default root HTTP_ROOT configuration, CherryPy HTTPRedirect passes the resulting value to urllib.parse.urljoin, which can resolve the whitespace-bearing path to an attacker-controlled external origin. A user who follows a crafted link can therefore be redirected outside Tautulli for phishing or post-login redirect-flow abuse, while custom non-root HTTP_ROOT configurations are not affected by this bypass. This issue is fixed in version 2.17.2.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":29.7,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":210437,"id":"CVE-2026-54915","ts":1790290513618,"field":"exploit_available","old":"false","new":"true"}]}