CVE-2025-13079: CWE-1241 Use of Predictable Algorithm in Random Number Generator in popupbuilder Popup Builder – Create highly converting, mobile friendly marketing popups.
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
CVE-2025-13079: CWE-1241 Use of Predictable Algorithm in Random Number Generator in popupbuilder Popup Builder – Create highly converting, mobile friendly marketing popups.
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
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2025-11-12T16:38:13.590Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69968d656aea4a407a39013e
Added to database: 2/19/2026, 4:11:17 AM
Last updated: 2/19/2026, 4:11:19 AM
Views: 1
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