Full Report
More than 46,000 internet-facing Grafana instances remain unpatched and exposed to a client-side open redirect vulnerability that allows executing a malicious plugin and account takeover. [...]
Analysis Summary
# Vulnerability: Grafana Account Takeover via Client-Side Exploitation
## CVE Details
- CVE ID: CVE-2025-4123 (Inferred from context, this is the identifier discussed)
- CVSS Score: (Not explicitly provided in the text, severity is implied by context of ATO)
- CWE: (Not explicitly provided)
## Affected Systems
- Products: Grafana (Specific versions listed under remediation)
- Versions: Versions prior to the specified patched versions (10.4.18+security-01, 11.2.9+security-01, 11.3.6+security-01, 11.4.4+security-01, 11.5.4+security-01, 11.6.1+security-01, and 12.0.0+security-01)
- Configurations: Exploitation is easier if the Grafana Image Renderer plugin is installed and if the plugin feature is enabled (enabled by default).
## Vulnerability Description
This vulnerability allows an attacker to hijack user sessions and change account credentials. The exploit leverages client-side attack vectors, manipulating Grafana's native JavaScript routing logic to bypass Content Security Policy (CSP) protections. This is achieved by exploiting URL handling inconsistencies to serve malicious plugins. If the Grafana Image Renderer plugin is present, the same mechanism can lead to Server-Side Request Forgery (SSRF) to read internal resources. Successful exploitation leads to the modification of a victim's email address, making account takeover trivial via password reset flows. The attack requires user interaction (e.g., clicking a malicious link) and an active user session.
## Exploitation
- Status: PoC available (OX Security demonstrated exploit)
- Complexity: Medium (Requires user interaction and specific conditions like active session/plugin enabled)
- Attack Vector: Network (via malicious link/URL)
## Impact
- Confidentiality: High (Potential disclosure of internal resources via SSRF if Image Renderer is present)
- Integrity: High (Ability to change account credentials and hijack sessions)
- Availability: Low (Primary impact is on user account availability/control)
## Remediation
### Patches
- Upgrade to Grafana versions:
- 10.4.18+security-01
- 11.2.9+security-01
- 11.3.6+security-01
- 11.4.4+security-01
- 11.5.4+security-01
- 11.6.1+security-01
- 12.0.0+security-01
### Workarounds
- (No specific workarounds detailed beyond patching, but the text mentions exploitation requires the plugin feature being enabled, suggesting disabling features or ensuring the Image Renderer plugin is not installed/required might reduce risk, though this is not an official recommendation.)
## Detection
- Detection methods and tools: (No specific Indicators of Compromise (IOCs) or detection signatures were provided in detail, other than monitoring for unusual plugin loading or network requests to internal resources if SSRF is successfully triggered.)
## References
- Vendor advisories: (Not explicitly linked/named, but implied by the patch release)
- Relevant links - defanged:
- hxxps://www.bleepingcomputer.com/news/security/over-46-000-grafana-instances-exposed-to-account-takeover-bug/