Full Report
Grafana security advisory (AV26-285)
Analysis Summary
# Vulnerability: Critical and High Severity Flaws in Grafana (CVE-2026-27876 & CVE-2026-27880)
## CVE Details
- **CVE ID:** CVE-2026-27876, CVE-2026-27880
- **CVSS Score:** Critical / High (Specific numerical scores not provided in advisory text)
- **CWE:** Not specified in the provided source
## Affected Systems
- **Products:** Grafana
- **Versions:**
- Versions prior to 12.4.2
- Versions prior to 12.3.6
- Versions prior to 12.2.8
- Versions prior to 12.1.10
- Versions prior to 11.6.14
- **Configurations:** Standard installations of the affected versions.
## Vulnerability Description
While the specific technical mechanics (e.g., path traversal, authentication bypass, etc.) are not detailed in the summary advisory, the vulnerabilities are classified as **Critical** and **High** severity. These flaws reside within the Grafana core application and necessitate immediate patching to prevent unauthorized access or system compromise.
## Exploitation
- **Status:** Not specified (refer to vendor blog for latest active exploitation status)
- **Complexity:** Not specified
- **Attack Vector:** Network (typical for Grafana security vulnerabilities)
## Impact
- **Confidentiality:** High
- **Integrity:** High
- **Availability:** High
## Remediation
### Patches
The manufacturer has released the following security updates. Users are advised to upgrade to the relevant branch:
- **Grafana 12.4.2** or newer
- **Grafana 12.3.6** or newer
- **Grafana 12.2.8** or newer
- **Grafana 12.1.10** or newer
- **Grafana 11.6.14** or newer
### Workarounds
No specific workarounds were provided in the advisory. Immediate upgrading is the recommended course of action.
## Detection
- **Indicators of compromise:** Review Grafana server logs for unusual authentication patterns or unauthorized API requests.
- **Detection methods and tools:** Monitor for version headers identifying vulnerable instances in environment inventory tools.
## References
- **Vendor Advisory:** hxxps[://]grafana[.]com/blog/2026/03/25/grafana-security-release-critical-and-high-severity-security-fixes-for-cve-2026-27876-and-cve-2026-27880/
- **Grafana Blog:** hxxps[://]grafana[.]com/blog/
- **Cyber Centre Advisory:** hxxps[://]www[.]cyber[.]gc[.]ca/en/alerts-advisories/grafana-security-advisory-av26-285