{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-102562", "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "state": "PUBLISHED", "assignerShortName": "Wordfence", "dateReserved": "2026-09-29T13:32:40.322Z", "datePublished": "2026-10-13T07:46:23.207Z", "dateUpdated": "2026-10-13T07:46:23.207Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "shortName": "Wordfence", "dateUpdated": "2026-10-13T07:46:23.207Z"}, "affected": [{"vendor": "acyba", "product": "AcyMailing \u2013 An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "11.1.0", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "The AcyMailing plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the customField[] parameter of the public frontusers::subscribe endpoint in versions up to, and including, 11.1.0. This is due to insufficient input sanitization and output escaping in the acym_cleanVar() sanitizer, whose HTML-tag stripper only matches complete tags (requiring a closing '>'), together with SubscriberInsertion::replaceUserInformation() and the archive view template, which substitute the stored subscriber field value into the mail body and emit it without HTML encoding. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses the online-archive URL for the poisoned subscriber, including administrators who click the plugin-generated link in the Subscribers \u2192 History screen."}], "title": "AcyMailing <= 11.1.0 - Unauthenticated Stored Cross-Site Scripting via 'customField[]' Parameter", "references": [{"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/eb8f03fb-d1af-4727-87d7-58dbe4013d8a?source=cve"}, {"url": "https://plugins.trac.wordpress.org/browser/acymailing/tags/11.1.0/front/FrontViews/Archive/tmpl/view.php#L17"}, {"url": "https://plugins.trac.wordpress.org/browser/acymailing/tags/11.1.0/back/dynamics/subscriber/SubscriberInsertion.php#L159"}, {"url": "https://plugins.trac.wordpress.org/browser/acymailing/tags/11.1.0/back/Classes/FieldClass.php#L292"}, {"url": "https://plugins.trac.wordpress.org/browser/acymailing/tags/11.1.0/back/Core/wordpress/security.php#L122"}, {"url": "https://plugins.trac.wordpress.org/browser/acymailing/tags/11.1.0/back/Classes/UserClass.php#L1187"}, {"url": "https://plugins.trac.wordpress.org/browser/acymailing/tags/11.1.0/front/FrontControllers/FrontusersController.php#L69"}, {"url": "https://plugins.trac.wordpress.org/changeset?reponame=&old=3729031%40acymailing&new=3729031%40acymailing"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "cweId": "CWE-79", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N", "baseScore": 7.2, "baseSeverity": "HIGH"}}], "credits": [{"lang": "en", "type": "finder", "value": "Ivaylo"}], "timeline": [{"time": "2026-09-29T13:48:26.000Z", "lang": "en", "value": "Vendor Notified"}, {"time": "2026-10-12T19:03:41.000Z", "lang": "en", "value": "Disclosed"}]}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "AcyMailing \u2013 An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress", "vendor": "acyba", "versions": [{"lessThanOrEqual": "11.1.0", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "[email protected]"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The AcyMailing plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the customField[] parameter of the public frontusers::subscribe endpoint in versions up to, and including, 11.1.0. This is due to insufficient input sanitization and output escaping in the acym_cleanVar() sanitizer, whose HTML-tag stripper only matches complete tags (requiring a closing '>'), together with SubscriberInsertion::replaceUserInformation() and the archive view template, which substitute the stored subscriber field value into the mail body and emit it without HTML encoding. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses the online-archive URL for the poisoned subscriber, including administrators who click the plugin-generated link in the Subscribers \u2192 History screen."}], "id": "CVE-2026-102562", "lastModified": "2026-10-13T08:16:59.263", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.2, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 2.7, "source": "[email protected]", "type": "Primary"}]}, "published": "2026-10-13T08:16:59.263", "references": [{"source": "[email protected]", "url": "https://plugins.trac.wordpress.org/browser/acymailing/tags/11.1.0/back/Classes/FieldClass.php#L292"}, {"source": "[email protected]", "url": "https://plugins.trac.wordpress.org/browser/acymailing/tags/11.1.0/back/Classes/UserClass.php#L1187"}, {"source": "[email protected]", "url": "https://plugins.trac.wordpress.org/browser/acymailing/tags/11.1.0/back/Core/wordpress/security.php#L122"}, {"source": "[email protected]", "url": "https://plugins.trac.wordpress.org/browser/acymailing/tags/11.1.0/back/dynamics/subscriber/SubscriberInsertion.php#L159"}, {"source": "[email protected]", "url": "https://plugins.trac.wordpress.org/browser/acymailing/tags/11.1.0/front/FrontControllers/FrontusersController.php#L69"}, {"source": "[email protected]", "url": "https://plugins.trac.wordpress.org/browser/acymailing/tags/11.1.0/front/FrontViews/Archive/tmpl/view.php#L17"}, {"source": "[email protected]", "url": "https://plugins.trac.wordpress.org/changeset?reponame=&old=3729031%40acymailing&new=3729031%40acymailing"}, {"source": "[email protected]", "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/eb8f03fb-d1af-4727-87d7-58dbe4013d8a?source=cve"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "[email protected]", "type": "Primary"}]}

{}

{}