CVE-2025-11539
Unknown Unknown - Not Provided

BaseFortify

Publication date: 2025-10-09

Last updated on: 2025-10-09

Assigner: Grafana Labs

Description
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.

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Meta Information

Published
2025-10-09
Last Modified
2025-10-09
Generated
2026-07-06
AI Q&A
2025-10-09
EPSS Evaluated
2026-07-05
NVD
CVE-2025-11539

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
grafana grafana-image-renderer 4.0.16
grafana grafana-image-renderer 1.0.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-94 The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Attack-Flow Graph

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Executive Summary

This vulnerability in Grafana Image Renderer allows remote code execution because the /render/csv endpoint does not properly validate the filePath parameter. An attacker can exploit this to write a shared object file to an arbitrary location, which is then loaded by the Chromium process, enabling the attacker to execute code remotely.

Impact Analysis

If exploited, this vulnerability can lead to remote code execution on the affected system, allowing an attacker to run arbitrary code with potentially high privileges. This can result in full system compromise, data theft, service disruption, or further attacks within the network.

Mitigation Strategies

Immediate mitigation steps include changing the default authToken to a strong, unique token to prevent unauthorized access, and restricting network access to the image renderer endpoint to trusted users only. Additionally, upgrading grafana-image-renderer to a version later than 4.0.16 where this vulnerability is fixed is recommended.

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