{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.17.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "d7b8147944c745c9dd566ac7839ed21f941d6d1d"
            }
          ],
          "repo": "https://github.com/tautulli/tautulli",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-m6j6-rc2c-8vpm"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43986.json"
  },
  "details": "Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Versions prior to 2.17.1 expose a public `/image/\u003chash\u003e` route that resolves attacker-controlled entries from `image_hash_lookup` and replays them through the same server-side image fetch logic used by authenticated image proxying. A low-privilege guest user can seed a malicious external image URL into this lookup table and then trigger server-side fetches through a fully unauthenticated endpoint. This turns an authenticated SSRF primitive into a persistent unauthenticated SSRF gadget. Once the malicious hash entry exists, any external user can request `/image/\u003chash\u003e.png` and cause the PMS or Tautulli host to fetch an arbitrary attacker-chosen URL. Version 2.17.1 patches the issue.",
  "id": "CVE-2026-43986",
  "modified": "2026-07-08T05:38:18.836440831Z",
  "published": "2026-06-04T14:33:36.547Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Tautulli/Tautulli/releases/tag/v2.17.1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43986.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/Tautulli/Tautulli/security/advisories/GHSA-m6j6-rc2c-8vpm"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43986"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Tautulli vulnerable to unauthenticated SSRF in /image/\u003chash\u003e via attacker-seeded image hash replay"
}