{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.17.2"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "07f9beaa0286f1ab3b5e6be9726c5b2de07ee9dd"
            },
            {
              "fixed": "c7153deb6e3017b8dda46c8448fe548a61c5a47a"
            }
          ],
          "repo": "https://github.com/tautulli/tautulli",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-7c9r-fhj9-87xm"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-601"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54915.json"
  },
  "details": "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.",
  "id": "CVE-2026-54915",
  "modified": "2026-09-26T03:30:41.697267962Z",
  "published": "2026-09-21T19:09:55.649Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Tautulli/Tautulli/releases/tag/v2.17.2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54915.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/Tautulli/Tautulli/security/advisories/GHSA-7c9r-fhj9-87xm"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54915"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Tautulli/Tautulli/commit/07f9beaa0286f1ab3b5e6be9726c5b2de07ee9dd"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Tautulli: Open redirect via whitespace bypass in /auth/redirect"
}