CVE-2026-17033 (GCVE-0-2026-17033)

Vulnerability from cvelistv5 – Published: 2026-08-24 13:52 – Updated: 2026-08-27 17:22
VLAI
Title
CVE-2026-17033 CVE Record
Summary
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.
Severity
6.8 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-24 15:10 UTC
CWE
  • CWE-79 - IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION ('CROSS-SITE SCRIPTING')
Assigner
GRAFANA CNA under the mitre root
CNA scorecard C 71/100 over 48 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Grafana Grafana OSS Affected: 0 , ≤ 12.3.11 (semver)
Affected: 12.4.0 , ≤ 12.4.9 (semver)
Affected: 13.0.0 , ≤ 13.0.7 (semver)
guessed Create a notification for this product.
Date Public
2026-08-24 12:11
Credits
nlgbao1340
Show details on NVD website
To clipboard 

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