{"api_version":"1","generated_at":"2026-09-23T00:05:19+00:00","cve":"CVE-2026-54915","urls":{"html":"https://cve.report/CVE-2026-54915","api":"https://cve.report/api/cve/CVE-2026-54915.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-54915","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-54915"},"summary":{"title":"Tautulli: Open redirect via whitespace bypass in /auth/redirect","description":"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. 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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."}],"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-601","description":"CWE-601: URL Redirection to Untrusted Site ('Open Redirect')","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-09-21T19:09:55.649Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"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"}],"source":{"advisory":"GHSA-7c9r-fhj9-87xm","discovery":"UNKNOWN"},"title":"Tautulli: Open redirect via whitespace bypass in /auth/redirect"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-54915","datePublished":"2026-09-21T19:09:55.649Z","dateReserved":"2026-06-16T13:49:33.556Z","dateUpdated":"2026-09-21T19:09:55.649Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-21 20:17:26","lastModifiedDate":"2026-09-21 20:17:26","problem_types":["CWE-601","CWE-601 CWE-601: URL Redirection to Untrusted Site ('Open Redirect')"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","baseScore":5.4,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":2.5}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"54915","Ordinal":"1","Title":"Tautulli: Open redirect via whitespace bypass in /auth/redirect","CVE":"CVE-2026-54915","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"54915","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"Tautulli: Open redirect via whitespace bypass in /auth/redirect"}]}}}