RCE in Grafana Grafana-Image-Renderer
CVE-2025-11539
Grafana Image Renderer is vulnerable to remote code execution due to an arbitrary file write vulnerability. This is due to the fact that the /render/csv endpoint lacked validation of the filePath parameter that allowed an attacker to save a shared object to an arbitrary location that is then loaded by the Chromium process. Instances are vulnerable if: 1. The default token ("authToken") is not changed, or is known to the attacker. 2. The attacker can reach the image renderer endpoint. This issue affects grafana-image-renderer: from 1.0.0 through 4.0.16.
Vulnerability class: RCE (Remote Code Execution)
EPSS: 0.006 (44.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Grafana Grafana-image-renderer — versions 1.0.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@grafana.com (vendor-advisory)
- security@grafana.com (patch)
Frequently asked questions
- What is CVE-2025-11539?
- CVE-2025-11539 is a critical-severity vulnerability in Grafana Grafana-Image-Renderer, classified under Code Injection. CVSS score: 9.9/10. Published 2025-10-09.
- How severe is CVE-2025-11539?
- Critical severity. CVSS v3 base score is 9.9 out of 10.
- Is CVE-2025-11539 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.