{"id":"CVE-2026-59788","aliases":["EUVD-2026-92400","GHSA-q964-q8gh-7pcw","UBUNTU-CVE-2026-59788"],"status":"published","title":"Stored XSS vulnerability in OAuth configuration form","description":"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 import file, runs arbitrary JavaScript as the Super Admin who grants consent.","severity":{"version":"4.0","score":5.6,"vector":"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00251,"percentile":0.16594,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-10-05T10:29:43Z","modified":"2026-10-17T13:00:29Z","affected":[{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"zabbix","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:2.0.6+dfsg-1ubuntu2","1:2.2.0+dfsg-1ubuntu1","1:2.2.0+dfsg-6ubuntu1","1:2.2.1+dfsg-1ubuntu3","1:2.2.2+dfsg-1ubuntu1","1:2.2.2+dfsg-1ubuntu1+esm1","1:2.2.2+dfsg-1ubuntu1+esm3","1:2.2.2+dfsg-1ubuntu1+esm4","1:2.2.2+dfsg-1ubuntu1+esm5"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"zabbix","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:2.4.6+dfsg-1","1:2.4.7+dfsg-1","1:2.4.7+dfsg-2","1:2.4.7+dfsg-2ubuntu2","1:2.4.7+dfsg-2ubuntu2.1","1:2.4.7+dfsg-2ubuntu2.1+esm1","1:2.4.7+dfsg-2ubuntu2.1+esm2","1:2.4.7+dfsg-2ubuntu2.1+esm3","1:2.4.7+dfsg-2ubuntu2.1+esm4"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"zabbix","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:3.0.7+dfsg-3","1:3.0.12+dfsg-1","1:3.0.12+dfsg-1ubuntu0.1~esm1","1:3.0.12+dfsg-1ubuntu0.1~esm2","1:3.0.12+dfsg-1ubuntu0.1~esm3","1:3.0.12+dfsg-1ubuntu0.1~esm4"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"zabbix","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:4.0.4+dfsg-1build2","1:4.0.4+dfsg-1build3","1:4.0.11+dfsg-1","1:4.0.14+dfsg-1","1:4.0.15+dfsg-1","1:4.0.16+dfsg-1","1:4.0.16+dfsg-1build1","1:4.0.17+dfsg-1","1:4.0.17+dfsg-1ubuntu0.1~esm1","1:4.0.17+dfsg-1ubuntu0.1~esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"zabbix","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:5.0.8+dfsg-1build1","1:5.0.14+dfsg-1","1:5.0.17+dfsg-1","1:5.0.17+dfsg-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"zabbix","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.0.22+dfsg-1","1:7.0.22+dfsg-1.1","1:7.0.22+dfsg-1.1build1","1:7.0.22+dfsg-1.1build2","1:7.0.27+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"zabbix","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.0.10+dfsg-2build1","1:7.0.22+dfsg-1"]}],"products":[{"vendor":"zabbix","product":"zabbix"}],"references":[{"url":"https://support.zabbix.com/browse/ZBX-28198","tags":["report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59788"},{"url":"https://github.com/advisories/GHSA-q964-q8gh-7pcw"},{"url":"https://ubuntu.com/security/CVE-2026-59788","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-59788","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-59788","title":"Stored XSS vulnerability in OAuth configuration form","description":"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 import file, runs arbitrary JavaScript as the Super Admin who grants consent.","status":"published","published":"2026-10-05T10:29:43.438Z","modified":"2026-10-05T11:23:05.997Z","cvss":[{"version":"4.0","score":5.6,"vector":"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","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:19:58.560602Z"}],"euvd":[{"id":"EUVD-2026-92400","description":"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 import file, runs arbitrary JavaScript as the Super Admin who grants consent.","status":"published","published":"2026-10-05T10:29:43Z","modified":"2026-10-05T11:23:05Z","cvss":[{"version":"4.0","score":5.6,"vector":"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","level":"medium"}],"updated_at":"2026-11-02T17:27:40.640907Z"}],"ghsa":[{"id":"GHSA-q964-q8gh-7pcw","title":"The email media type OAuth form passes the Authorization endpoint value to window.open() without...","description":"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 import file, runs arbitrary JavaScript as the Super Admin who grants consent.","status":"published","published":"2026-10-05T12:31:27Z","modified":"2026-10-05T12:31:34Z","cvss":[{"version":"4.0","score":5.7,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:12:48.068686Z"}],"nvd":[{"id":"CVE-2026-59788","description":"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 import file, runs arbitrary JavaScript as the Super Admin who grants consent.","status":"published","published":"2026-10-05T11:17:00.113Z","modified":"2026-10-06T15:27:05.657Z","cvss":[{"version":"4.0","score":5.7,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:53.75133Z"}],"osv":[{"id":"UBUNTU-CVE-2026-59788","description":"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 import file, runs arbitrary JavaScript as the Super Admin who grants consent.","status":"published","published":"2026-10-05T11:17:00Z","modified":"2026-10-17T13:00:29.468112043Z","cvss":[{"version":"4.0","score":5.6,"vector":"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","level":"medium"}],"updated_at":"2026-11-02T16:56:41.911783Z"}]}}