{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-54915","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-16T13:49:33.556Z","datePublished":"2026-09-21T19:09:55.649Z","dateUpdated":"2026-09-24T22:33:08.526Z"},"containers":{"cna":{"title":"Tautulli: Open redirect via whitespace bypass in /auth/redirect","problemTypes":[{"descriptions":[{"cweId":"CWE-601","lang":"en","description":"CWE-601: URL Redirection to Untrusted Site ('Open Redirect')","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/Tautulli/Tautulli/security/advisories/GHSA-7c9r-fhj9-87xm","tags":["x_refsource_CONFIRM"],"url":"https://github.com/Tautulli/Tautulli/security/advisories/GHSA-7c9r-fhj9-87xm"},{"name":"https://github.com/Tautulli/Tautulli/commit/07f9beaa0286f1ab3b5e6be9726c5b2de07ee9dd","tags":["x_refsource_MISC"],"url":"https://github.com/Tautulli/Tautulli/commit/07f9beaa0286f1ab3b5e6be9726c5b2de07ee9dd"},{"name":"https://github.com/Tautulli/Tautulli/releases/tag/v2.17.2","tags":["x_refsource_MISC"],"url":"https://github.com/Tautulli/Tautulli/releases/tag/v2.17.2"}],"affected":[{"vendor":"Tautulli","product":"Tautulli","versions":[{"version":"< 2.17.2","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-21T19:09:55.649Z"},"descriptions":[{"lang":"en","value":"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 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."}],"source":{"advisory":"GHSA-7c9r-fhj9-87xm","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/Tautulli/Tautulli/security/advisories/GHSA-7c9r-fhj9-87xm","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-24T22:32:41.588945Z","id":"CVE-2026-54915","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-24T22:33:08.526Z"}}]}}