{"identifier":"CVE-2026-93757","cve":{"id":"CVE-2026-93757","description":"The Wild Apricot Login plugin for WordPress is vulnerable to Authentication Bypass via SSO Email-Collision Account Binding in all versions up to, and including, 1.0.18. When no WildApricot contact-ID mapping is found for an incoming SSO login, the plugin falls back to a network-global `get_user_by('email', ...)` lookup in `Module.php` to resolve a WordPress user, then `UserSynchronizer::syncWaContact()` binds and `Controller::login()` issues a session cookie via `wp_set_auth_cookie()` for that resolved user — both guarded only by `is_super_admin()` — without ever requiring proof of ownership of the matched WordPress account such as a password, local account-linking confirmation, inbox verification, or administrator approval. This makes it possible for attackers with custom-level WildApricot membership access to authenticate as an existing WordPress subsite administrator on a path-based Multisite network, obtaining a valid network-global authentication cookie for the victim without their credentials. Exploitation requires that the attacker control a WildApricot contact whose email address matches the target WordPress administrator's email — achievable via a public zero-fee membership application on the connected WildApricot organization — and that they complete the SSO flow on any subsite where Wild Apricot Login is active; because WordPress user identities and authentication cookies are network-global, the cookie issued on that subsite is equally valid on any other subsite where the victim user holds an administrator role.","published":"2026-10-29T04:18:43.763000+00:00","modified":"2026-10-29T14:56:26.107000+00:00","status":"Deferred","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_version":"3.1","affected":[],"weaknesses":["CWE-287"],"references":[{"url":"https://plugins.trac.wordpress.org/browser/wild-apricot-login/tags/1.0.18/Modules/Authorization/WaLogin/Controller.php#L347","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/wild-apricot-login/tags/1.0.18/Modules/Core/Module.php#L112","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/wild-apricot-login/tags/1.0.18/Modules/Core/Module.php#L159","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/wild-apricot-login/tags/1.0.18/Modules/Core/WaApi/Client.php#L22","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/wild-apricot-login/tags/1.0.18/Modules/Synchronization/UserSynchronizer.php#L36","source":"security@wordfence.com"},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/9adbe55e-f1a1-4fa8-b28d-539d90d81c68?source=cve","source":"security@wordfence.com"}],"kev":null,"kev_checked":true,"metrics":{"cvssMetricV31":[{"source":"security@wordfence.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.6,"impactScore":5.9}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-10-29T10:34:17.390489Z","id":"CVE-2026-93757","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[],"source":"nvd","retrieved_at":"2026-10-29T17:34:21.477061+00:00","exploited":false,"kev_stale":false,"products":[],"priority":{"label":"Assess exposure and vendor guidance","reasons":["No higher-priority signal is available in the current stored evidence."]},"epss":{"probability":0.00425,"percentile":0.36692,"date":"2026-10-29","stale":false},"version_assessment":null},"news":[],"campaigns":[],"domains":[{"domain":"plugins.trac.wordpress.org","source_url":"https://plugins.trac.wordpress.org/browser/wild-apricot-login/tags/1.0.18/Modules/Authorization/WaLogin/Controller.php#L347","investigate_url":"https://investigate.aeglixmind.com/#plugins.trac.wordpress.org"},{"domain":"www.wordfence.com","source_url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/9adbe55e-f1a1-4fa8-b28d-539d90d81c68?source=cve","investigate_url":"https://investigate.aeglixmind.com/#www.wordfence.com"}],"arsenal_url":"https://arsenal.aeglixmind.com/?cve=CVE-2026-93757","catalog_url":"https://cves.aeglixmind.com/cve/CVE-2026-93757","research_url":"https://investigate.aeglixmind.com/research/cve/CVE-2026-93757","coverage":{"news_candidates_checked":0,"campaign_candidates_checked":0,"bounded":false,"notice":"Exact CVE mentions in stored public excerpts and reviewed campaign content only. A mention is not proof of exploitation, attribution or tool suitability. Missing matches do not establish absence."}}