{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "0.11.0"
              },
              {
                "fixed": "0.11.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "b2223ddf425ec7755d9f1b3883f7e9f7bc06df5e"
            }
          ],
          "repo": "https://github.com/jointakahe/takahe",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91146.json"
  },
  "details": "Takahe through 0.11.0 fails to restrict URL schemes in link hrefs within federated post content and profile summaries, allowing remote actors to inject javascript: links. Attackers can deliver federated content with malicious javascript: hrefs that execute in the instance origin when clicked, enabling session hijacking or impersonation of viewers.",
  "id": "CVE-2026-91146",
  "modified": "2026-09-19T03:30:34.848225406Z",
  "published": "2026-09-14T21:45:46.041Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91146.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-91146"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/takahe-through-0.11.0-cross-site-scripting-via-javascript-url-scheme"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/jointakahe/takahe/issues/728"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/jointakahe/takahe"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/jointakahe/takahe/blob/0.11.0/core/html.py"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Takahe through 0.11.0 Cross-Site Scripting via javascript: URL Scheme"
}