{"id":"CVE-2026-91146","summary":"Takahe through 0.11.0 Cross-Site Scripting via javascript: URL Scheme","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.","modified":"2026-09-19T03:30:34.848225406Z","published":"2026-09-14T21:45:46.041Z","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"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/jointakahe/takahe","events":[{"introduced":"0"},{"fixed":"b2223ddf425ec7755d9f1b3883f7e9f7bc06df5e"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"0.11.0"},{"fixed":"0.11.0"}],"source":["AFFECTED_FIELD","DESCRIPTION"]}}],"versions":["0.10.1","0.10.0","0.9.0","0.8.0","0.7.0","0.6.1","0.6.0","0.5.0","0.4.0","0.3.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-91146.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","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"}]}