CVE-2025-13079

Description

The Popup Builder – Create highly converting, mobile friendly marketing popups. plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.4.2. This is due to the plugin generating predictable unsubscribe tokens using deterministic data. This makes it possible for unauthenticated attackers to unsubscribe arbitrary subscribers from mailing lists via brute-forcing the unsubscribe token, granted they know the victim's email address

PUBLISHED Reserved 2025-11-12 | Published 2026-02-19 | Updated 2026-02-19 | Assigner Wordfence

Problem types

CWE-1241 Use of Predictable Algorithm in Random Number Generator

Product status

Timeline

Credits

Rafshanzani Suhada finder

References

www.wordfence.com/...-0580-4e1d-824d-9b8355890248?source=cve

plugins.trac.wordpress.org/.../4.4.2/com/classes/Actions.php

plugins.trac.wordpress.org/....2/com/helpers/AdminHelper.php

plugins.trac.wordpress.org/...-builder&sfp_email=&sfph_mail=

cve.org (CVE-2025-13079)

nvd.nist.gov (CVE-2025-13079)

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