CVE-2026-55210 Joplin: SAML SSO account takeover via email-based account linking (missing is_external check in ssoLogin)

Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.2, Joplin Server's UserModel.ssoLogin returns an existing account matched by an IdP-asserted email without checking the account's isexternal flag. In deployments using mixed loca...

EUVD-2026-84176

Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.2, Joplin Server's UserModel.ssoLogin returns an existing account matched by an IdP-asserted email without checking the account's isexternal flag. In deployments using mixed loca...

CVE-2026-55210

Joplin Server prior to 3.7.2 contains a vulnerability in UserModel.ssoLogin() where the method returns an existing account matched by an IdP-asserted email without checking the is_external flag . In deployments using mixed local and SAML authentication , an attacker whose IdP session can assert a...

CVE-2026-55210 Joplin: SAML SSO account takeover via email-based account linking (missing is_external check in ssoLogin)

Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.2, Joplin Server's UserModel.ssoLogin returns an existing account matched by an IdP-asserted email without checking the account's isexternal flag. In deployments using mixed loca...

CVE-2026-55210 Joplin: SAML SSO account takeover via email-based account linking (missing is_external check in ssoLogin)

Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.2, Joplin Server's UserModel.ssoLogin returns an existing account matched by an IdP-asserted email without checking the account's isexternal flag. In deployments using mixed loca...