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
Metrics
Affected Vendors & Products
References
History
Thu, 19 Feb 2026 10:30:00 +0000
| Type | Values Removed | Values Added |
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Popupbuilder
Popupbuilder popup Builder – Create Highly Converting, Mobile Friendly Marketing Popups. Wordpress Wordpress wordpress |
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| Vendors & Products |
Popupbuilder
Popupbuilder popup Builder – Create Highly Converting, Mobile Friendly Marketing Popups. Wordpress Wordpress wordpress |
Thu, 19 Feb 2026 04:15:00 +0000
| Type | Values Removed | Values Added |
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| 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 | |
| Title | Popup Builder - Create highly converting, mobile friendly marketing popups. <= 4.4.2 - Improper Authorization to Unauthenticated Subscriber Removal via Predictable Tokens | |
| Weaknesses | CWE-1241 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: Wordfence
Published: 2026-02-19T03:25:14.826Z
Updated: 2026-02-19T03:25:14.826Z
Reserved: 2025-11-12T16:38:13.590Z
Link: CVE-2025-13079
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