{"schemaVersion":3,"id":"CVE-2026-40488","aliases":[],"status":"published","duplicateOf":null,"title":"OpenMage LTS has Customer File Upload Extension Blocklist Bypass that Leads to Remote Code Execution","description":"Magento Long Term Support (LTS) is an unofficial, community-driven project provides an alternative to the Magento Community Edition e-commerce platform with a high level of backward compatibility. Prior to version 20.17.0, the product custom option file upload in OpenMage LTS uses an incomplete blocklist (`forbidden_extensions = php,exe`) to prevent dangerous file uploads. This blocklist can be trivially bypassed by using alternative PHP-executable extensions such as `.phtml`, `.phar`, `.php3`, `.php4`, `.php5`, `.php7`, and `.pht`. Files are stored in the publicly accessible `media/custom_options/quote/` directory, which lacks server-side execution restrictions for some configurations, enabling Remote Code Execution if this directory is not explicitly denied script execution. Version 20.17.0 patches the issue.","dates":{"published":"2026-04-20T16:23:07.429Z","modified":"2026-04-20T16:55:05.724Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.8,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":8.7,"severity":"high","vector":"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","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":8.7,"severity":"high","vector":"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","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00957,"percentile":0.6108,"severity":"low","asOf":"2026-10-22T00:00:00.000Z","change":{"pp":0.266,"baselineDate":"2026-09-22T00:00:00.000Z","baselineScore":0.00691},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00691,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00691,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00691,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00691,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00691,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00691,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00691,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00691,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00691,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00691,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-22T00:00:00.000Z","score":0.00957,"percentile":0.6108}],"last30":[{"date":"2026-09-22T00:00:00.000Z","score":0.00691,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00691,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00957,"percentile":null},{"date":"2026-10-22T00:00:00.000Z","score":0.00957,"percentile":0.6108}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[{"id":"GITHUB_OPENMAGE_MAGENTO-LTS","name":"Magento Lts","source":"github","url":"https://github.com/OpenMage/magento-lts/security/advisories/GHSA-9358-cpvx-c2qp","maturity":"poc","reliabilityScore":0.3,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-434","name":"Unrestricted Upload of File with Dangerous Type","description":"The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/434.html"}],"affected":[{"vendor":"openmage","product":"magento","name":"magento","label":"magento","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 20.17.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 20.17.0","eol":null,"hubHref":"/vendor/openmage/magento"},{"vendor":"openmage","product":"magento-lts","name":"magento-lts","label":"magento-lts","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 20.17.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 20.17.0","eol":null,"hubHref":"/vendor/openmage/magento-lts"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/OpenMage/magento-lts/security/advisories/GHSA-3j5q-7q7h-2hhv","label":"github.com/OpenMage/magento-lts/security/advisories/GHSA-3j5q-7q7h-2hhv","hostname":"github.com","tags":["X Refsource CONFIRM","Exploit","Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-04-20T16:23:07.429Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-20T16:55:05.724Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":45,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T17:55:29.297Z","stale":false,"partial":false}}