CVE-2026-15797
The Popup Maker – Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via post_title in all versions up to, and including, 1.24.0 due to insufficient input…
Does this matter?
Lower severity and a low EPSS score (0.45%). Track it; it rarely justifies an emergency change on its own.
Description
The Popup Maker – Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via post_title in all versions up to, and including, 1.24.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires the attacker to create a post with an HTML entity-encoded payload in the title, which bypasses sanitize_text_field on save and is later decoded and executed by the browser when rendered by the Select2 component.
- CVSS 3.1
- 6.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- EPSS
- 0.45% probability · 39th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Source
- security@wordfence.com
EPSS 0.4% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://plugins.trac.wordpress.org/browser/popup-maker/tags/1.22.0/classes/Admin/Ajax.php#L152
- https://plugins.trac.wordpress.org/browser/popup-maker/tags/1.22.0/classes/Admin/Ajax.php#L163
- https://plugins.trac.wordpress.org/browser/popup-maker/tags/1.22.0/classes/Helpers.php#L192
- https://plugins.trac.wordpress.org/browser/popup-maker/tags/1.22.0/dist/assets/admin-general.js#L1
- https://plugins.trac.wordpress.org/browser/popup-maker/tags/1.23.0/classes/Admin/Ajax.php#L152
- https://plugins.trac.wordpress.org/browser/popup-maker/tags/1.23.0/classes/Admin/Ajax.php#L163
- https://plugins.trac.wordpress.org/browser/popup-maker/tags/1.23.0/classes/Helpers.php#L192
- https://plugins.trac.wordpress.org/browser/popup-maker/tags/1.23.0/dist/assets/admin-general.js#L1
- https://plugins.trac.wordpress.org/changeset/3690634/popup-maker/trunk/classes/Admin/Ajax.php
- https://plugins.trac.wordpress.org/changeset?reponame=&new=3690634%40popup-maker%2Ftags%2F1.25.0&old=3648112%40popup-maker%2Ftags%2F1.24.0
- https://www.wordfence.com/threat-intel/vulnerabilities/id/973b23c6-4edd-4f89-b5cf-68e83cfdb8ac?source=cve
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.