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Description

The Popup Box plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 6.1.1. This is due to a flawed nonce implementation in the 'publish_unpublish_popupbox' function that verifies a self-created nonce rather than one submitted in the request. This makes it possible for unauthenticated attackers to change the publish status of popups via a forged request, granted they can trick a site administrator into performing an action such as clicking a link.

PUBLISHED Reserved 2026-01-19 | Published 2026-01-31 | Updated 2026-01-31 | Assigner Wordfence




MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Problem types

CWE-352 Cross-Site Request Forgery (CSRF)

Product status

Default status
unaffected

* (semver)
affected

Timeline

2026-01-19:Vendor Notified
2026-01-30:Disclosed

Credits

Bui Van Y finder

References

www.wordfence.com/...-f394-4cb2-9050-659171a994d9?source=cve

plugins.trac.wordpress.org/...tials/ays-pb-admin-display.php

plugins.trac.wordpress.org/...ts/class-ays-pb-list-table.php

plugins.trac.wordpress.org/...4612@ays-popup-box/tags/6.1.2/

cve.org (CVE-2026-1165)

nvd.nist.gov (CVE-2026-1165)

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