{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-66703", "assignerOrgId": "21595511-bba5-4825-b968-b78d1f9984a3", "state": "PUBLISHED", "assignerShortName": "Patchstack", "dateReserved": "2026-07-27T14:01:16.155Z", "datePublished": "2026-08-06T14:28:06.899Z", "dateUpdated": "2026-08-06T15:35:14.346Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "21595511-bba5-4825-b968-b78d1f9984a3", "shortName": "Patchstack", "dateUpdated": "2026-08-06T14:28:06.899Z"}, "title": "WordPress MailOptin plugin <= 1.2.78.0 - Cross Site Scripting (XSS) vulnerability", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-79", "description": "CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-592", "descriptions": [{"lang": "en", "value": "CAPEC-592 Stored XSS"}]}], "affected": [{"vendor": "properfraction", "collectionURL": "https://wordpress.org/plugins", "defaultStatus": "unaffected", "packageName": "mailoptin", "product": "MailOptin", "versions": [{"lessThanOrEqual": "1.2.78.0", "status": "affected", "version": "n/a", "versionType": "custom", "changes": [{"at": "1.2.78.1", "status": "unaffected"}]}]}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Contributor Cross Site Scripting (XSS) in MailOptin <= 1.2.78.0 versions."}], "value": "Contributor Cross Site Scripting (XSS) in MailOptin <= 1.2.78.0 versions."}], "references": [{"tags": ["vdb-entry"], "url": "https://patchstack.com/database/wordpress/plugin/mailoptin/vulnerability/wordpress-mailoptin-plugin-1-2-78-0-cross-site-scripting-xss-vulnerability?_s_id=cve"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW", "version": "3.1", "baseSeverity": "MEDIUM", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L"}}], "solutions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Update the WordPress MailOptin Plugin to the latest available version (at least 1.2.78.1)."}], "value": "Update the WordPress MailOptin Plugin to the latest available version (at least 1.2.78.1)."}], "credits": [{"lang": "en", "type": "finder", "user": "00000000-0000-4000-9000-000000000000", "value": "Ananda Dhakal (Patchstack) | Patchstack Bug Bounty Program"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 0.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-06T15:25:58.077831Z", "id": "CVE-2026-66703", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-06T15:35:14.346Z"}}]}}

{}

{"affected": [{"affectedData": [{"collectionURL": "https://wordpress.org/plugins", "defaultStatus": "unaffected", "packageName": "mailoptin", "product": "MailOptin", "vendor": "properfraction", "versions": [{"changes": [{"at": "1.2.78.1", "status": "unaffected"}], "lessThanOrEqual": "1.2.78.0", "status": "affected", "version": "n/a", "versionType": "custom"}]}], "source": "audit@patchstack.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Contributor Cross Site Scripting (XSS) in MailOptin <= 1.2.78.0 versions."}], "id": "CVE-2026-66703", "lastModified": "2026-08-12T20:58:37.847", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 3.7, "source": "audit@patchstack.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-66703", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-06T15:25:58.077831Z", "version": "2.0.3"}}]}, "published": "2026-08-06T15:17:23.273", "references": [{"source": "audit@patchstack.com", "url": "https://patchstack.com/database/wordpress/plugin/mailoptin/vulnerability/wordpress-mailoptin-plugin-1-2-78-0-cross-site-scripting-xss-vulnerability?_s_id=cve"}], "sourceIdentifier": "audit@patchstack.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "audit@patchstack.com", "type": "Secondary"}]}

{}