Grafana 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.
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No vendor fix or workaround currently provided.
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Mon, 24 Aug 2026 21:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Grafana
Grafana grafana |
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| Vendors & Products |
Grafana
Grafana grafana |
Mon, 24 Aug 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Mon, 24 Aug 2026 14:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. Grafana 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. | |
| Title | CVE-2026-17033 CVE Record | |
| Weaknesses | CWE-79 | |
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: GRAFANA
Published:
Updated: 2026-08-24T15:11:08.143Z
Reserved: 2026-07-24T12:11:43.417Z
Link: CVE-2026-17033
Updated: 2026-08-24T15:11:03.288Z
Status : Received
Published: 2026-08-24T14:16:50.717
Modified: 2026-08-24T15:16:37.467
Link: CVE-2026-17033
No data.
OpenCVE Enrichment
Updated: 2026-08-24T20:45:04Z
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CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')