CVE-2026-81783
Subscriber Broken Authentication in MailMunch – Grow your Email List <= 3.2.5 versions.
CVSS
7.1
Alto
EPSS
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KEV
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Exploit Today
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0-100
Publicado: 10 sept 2026 · Última mod.: 10 sept 2026 · CWE-288
Sin historial EPSS suficiente todavía.
Subscriber Broken Authentication in MailMunch – Grow your Email List <= 3.2.5 versions.
CVECVSSEPSSKEVRExplotTítuloVis.
CVE-2026-81906——
———Concrete CMS OAuth callback login path prior to version 9.5.3 did not check whether an account was active or email-validated before establishing a session. A deactivated or unvalidated user with an existing OAuth binding could complete authentication and receive a session that was fully authenticated for the callback response, with the login recorded and login events dispatched. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 6.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Yonatan Drori from Tenzai for reporting.5hCVE-2026-817967.3 ALT—
———Unauthenticated Broken Authentication in WP Travel <= 12.0.3 versions.8hCVE-2026-817876.5 MED—
———Unauthenticated Broken Authentication in IMPress for IDX Broker <= 3.3.0 versions.11hCVE-2026-888618.3 ALT—
———Capgo (Cap-go/capgo.app) contains an authentication bypass affecting all versions (no patched version available at time of publication). The Edge authorization path allows a password-only Supabase aal1 session to exercise privileged RBAC permissions even when the account has a verified MFA factor that has not been used for the session: the Edge JWT middleware (foundJWT() in supabase/functions/_backend/utils/hono_middleware.ts) accepts the JWT without validating its assurance level, and the direct RBAC path (checkPermission()/checkPermissionPg() in supabase/functions/_backend/utils/rbac.ts calling public.rbac_check_permission_direct()) authorizes by user ID without passing or checking the session aal, unlike the public.verify_mfa() control which correctly requires aal2. An attacker who knows only the victim's password can therefore authenticate, mint a persistent app-scoped app_admin API key that remains valid after the aal1 session is logged out, and perform privileged operations such as modifying production OTA channel configurations (validated by changing a public production channel from bundle 1.0.0 to 1.0.1), defeating the protection provided by MFA.14hCVE-2026-860845.5 MED24.6%
——7n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, the public OIDC login and callback endpoints completed authentication even when OIDC was not the enabled active authentication method. An Enterprise administrator who had configured and later disabled an identity provider still exposed a working route that could issue valid sessions. The affected logic is packages/cli/src/modules/sso-oidc/oidc.service.ee.ts, including generateLoginUrl and the callback flow that lacked assertOidcLoginEnabled. This issue is fixed in versions 1.123.76, 2.37.7 and 2.38.2.8hCVE-2026-498877.8 ALT2.6%
——1In maybeRemoveInvalidInstallerPackageName of InstallRepository.kt, there is a possible unauthorized app update due to a permissions bypass. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.15h