CVE-2026-18322

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Smart Popup by Supsystic", "vendor": "supsysticcom", "versions": [{"lessThanOrEqual": "1.12.0", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "security@wordfence.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The Smart Popup by Supsystic plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 1.12.0. This is due to a permission map collision in the `havePermissions()` function in `classes/frame.php`, where `array_merge()` overwrites the popup module's administrator-restricted method list with the base controller's value, silently removing `save` from protected actions; this is compounded by the subscription confirmation email embedding the same generic `pps_nonce` that the unauthenticated `wp_ajax_nopriv_save` endpoint accepts, and by the complete absence of any server-side role allowlist in `createWpSubscriber()`. This makes it possible for unauthenticated attackers to submit a crafted POST request to `admin-ajax.php` using a nonce obtained from a public subscription confirmation email, setting `params[tpl][sub_wp_create_user_role]` to `administrator` via the exposed `popupControllerPps::save()` action, and then triggering the stored confirmation flow to create a persistent WordPress Administrator account with attacker-chosen credentials."}], "id": "CVE-2026-18322", "lastModified": "2026-08-12T21:00:37.147", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "security@wordfence.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-18322", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-08-05T14:12:18.732279Z", "version": "2.0.3"}}]}, "published": "2026-08-05T06:16:37.330", "references": [{"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/popup-by-supsystic/tags/1.11.2/classes/frame.php#L180"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/popup-by-supsystic/tags/1.11.2/modules/popup/models/popup.php#L316"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/popup-by-supsystic/tags/1.11.2/modules/subscribe/models/subscribe.php#L292"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/popup-by-supsystic/tags/1.11.2/modules/subscribe/models/subscribe.php#L358"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/popup-by-supsystic/tags/1.11.2/modules/subscribe/models/subscribe.php#L440"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3629986%40popup-by-supsystic%2Ftrunk%2Fmodules%2Fsubscribe%2Fmodels%2Fsubscribe.php&old=3628131%40popup-by-supsystic%2Ftrunk%2Fmodules%2Fsubscribe%2Fmodels%2Fsubscribe.php&sfp_email=&sfph_mail="}, {"source": "security@wordfence.com", "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/835579b0-8a96-40fa-a6a3-30571a0a1d0a?source=cve"}], "sourceIdentifier": "security@wordfence.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-269"}], "source": "security@wordfence.com", "type": "Secondary"}]}

{}

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