{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-27064", "assignerOrgId": "21595511-bba5-4825-b968-b78d1f9984a3", "state": "PUBLISHED", "assignerShortName": "Patchstack", "dateReserved": "2026-02-17T13:23:42.767Z", "datePublished": "2026-07-23T11:17:52.448Z", "dateUpdated": "2026-07-23T11:32:38.106Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "21595511-bba5-4825-b968-b78d1f9984a3", "shortName": "Patchstack", "dateUpdated": "2026-07-23T11:32:38.106Z"}, "title": "WordPress Mailster plugin <= 4.1.17 - Arbitrary File Upload vulnerability", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-434", "description": "CWE-434 Unrestricted Upload of File with Dangerous Type", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-17", "descriptions": [{"lang": "en", "value": "CAPEC-17 Using Malicious Files"}]}], "affected": [{"vendor": "EverPress", "defaultStatus": "unaffected", "product": "Mailster", "versions": [{"lessThanOrEqual": "4.1.17", "status": "affected", "version": "n/a", "versionType": "custom", "changes": [{"at": "4.1.18", "status": "unaffected"}]}]}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Editor Arbitrary File Upload in Mailster <= 4.1.17 versions."}], "value": "Editor Arbitrary File Upload in Mailster <= 4.1.17 versions."}], "references": [{"tags": ["vdb-entry"], "url": "https://patchstack.com/database/wordpress/plugin/mailster/vulnerability/wordpress-mailster-plugin-4-1-17-arbitrary-file-upload-vulnerability?_s_id=cve"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "version": "3.1", "baseSeverity": "CRITICAL", "baseScore": 9.1, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H"}}], "solutions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Update the WordPress Mailster Plugin to the latest available version (at least 4.1.18)."}], "value": "Update the WordPress Mailster Plugin to the latest available version (at least 4.1.18)."}], "credits": [{"lang": "en", "type": "finder", "user": "00000000-0000-4000-9000-000000000000", "value": "Phat RiO | Patchstack Bug Bounty Program"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 0.2.0"}}}}

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