{"id":"CVE-2026-17033","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-17033","generatedAt":"2026-10-28T02:11:06.974Z","title":"An authenticated attacker with Editor access or alert.instances.external:write can submit an external Alertmanager alert containing a controlled generatorURL.","description":"An authenticated attacker with Editor access or alert.instances.external:write can submit an external Alertmanager alert containing a controlled generatorURL. The attacker is authorized to create the alert, but not to execute script in another user's Grafana session.\n\nGrafana renders alert.generatorURL directly as the Alert Details See source LinkButton href without URL-scheme sanitization or a safe-protocol allowlist. The click interceptor's :// heuristic can be bypassed by placing :// inside a JavaScript comment. When a user with read access clicks See source, the browser executes attacker-controlled JavaScript in the Grafana origin with the clicking user's permissions.","published":"2026-08-24T14:16:51.000Z","lastModified":"2026-10-12T15:10:00.000Z","status":"Awaiting Analysis","sourceIdentifier":"security@grafana.com","cvss":{"version":"3.1","score":6.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L"},"cwe":["CWE-79"],"affected":[],"epss":{"score":0.00218,"percentile":0.12189,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.22%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://grafana.com/security/security-advisories/cve-2026-17033","source":"security@grafana.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-17033","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}