{"id":"CVE-2026-91146","title":"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","summary":"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:…","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-79"],"vendor":"jointakahe","product":"takahe","affected":["takahe <= 0.11.0"],"published":"2026-09-14","updated":"2026-09-23","sourceUpdated":"2026-09-23T17:17:47.773","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-91146","references":[{"url":"https://github.com/jointakahe/takahe","label":"disclosure@vulncheck.com"},{"url":"https://github.com/jointakahe/takahe/blob/0.11.0/core/html.py","label":"disclosure@vulncheck.com"},{"url":"https://github.com/jointakahe/takahe/issues/728","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/takahe-through-0.11.0-cross-site-scripting-via-javascript-url-scheme","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"epss":0.00194,"epssPercentile":0.09344,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-18T17:14:22.823019Z"},"ingestedAt":"2026-09-14T22:16:09.893Z","slug":"CVE-2026-91146","body":"## Overview\n\nTakahe 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":33.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}