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Description

The IndieAuth plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 4.5.4. This is due to missing nonce verification on the `login_form_indieauth()` function and the authorization endpoint at wp-login.php?action=indieauth. This makes it possible for unauthenticated attackers to force authenticated users to approve OAuth authorization requests for attacker-controlled applications via a forged request granted they can trick a user into performing an action such as clicking on a link or visiting a malicious page while logged in. The attacker can then exchange the stolen authorization code for an access token, effectively taking over the victim's account with the granted scopes (create, update, delete).

PUBLISHED Reserved 2025-10-21 | Published 2025-10-24 | Updated 2025-10-24 | Assigner Wordfence




HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Problem types

CWE-352 Cross-Site Request Forgery (CSRF)

Product status

Default status
unaffected

* (semver)
affected

Timeline

2025-10-23:Disclosed

Credits

Jonas Benjamin Friedli finder

References

www.wordfence.com/...-d5a6-4e3b-90f4-059da3641841?source=cve

plugins.trac.wordpress.org/...uth-authorization-endpoint.php

plugins.trac.wordpress.org/...uth-authorization-endpoint.php

plugins.trac.wordpress.org/...uth-authorization-endpoint.php

cve.org (CVE-2025-12028)

nvd.nist.gov (CVE-2025-12028)

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