{"id":"CVE-2026-59788","title":"The email media type OAuth form passes the Authorization endpoint value to window.open() without validating the URL scheme, so a javascript: URL is executed in the browser","summary":"The email media type OAuth form passes the Authorization endpoint value to window.open() without validating the URL scheme, so a javascript: URL is executed in the browser. This means a crafted media type configuration, deliverable as an…","severity":"medium","cvss":5.6,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","cwe":["CWE-79"],"vendor":"Zabbix","product":"Zabbix","affected":["Zabbix >= 7.4.0 <= 7.4.11"],"published":"2026-10-05","updated":"2026-10-06","sourceUpdated":"2026-10-06T15:27:05.657","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-59788","references":[{"url":"https://support.zabbix.com/browse/ZBX-28198","label":"security@zabbix.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-59788.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-59788"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-59788"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59788"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-05T11:22:54.202007Z"},"cvssSource":"cna","scores":{"cna":5.6,"vendor":4.8},"ingestedAt":"2026-10-05T11:18:17.204Z","epss":0.00251,"epssPercentile":0.16358,"slug":"CVE-2026-59788","body":"## Overview\n\nThe email media type OAuth form passes the Authorization endpoint value to window.open() without validating the URL scheme, so a javascript: URL is executed in the browser. This means a crafted media type configuration, deliverable as an import file, runs arbitrary JavaScript as the Super Admin who grants consent.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · updated 2026-10-05 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-59788.json)","depth":"sunlit","depthScore":31,"depthScoreParts":{"impact":30.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}