CVE-2026-87915 json
Popup Maker <= 1.24.0 - Unauthenticated Stored Cross-Site Scripting via values[Name] Parameter
published last mo. modified last mo. also EUVD-2026-82855
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 42%
- public exploits
- 0
- none known
Summary
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 values[Name] Parameter in all versions up to, and including, 1.24.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The wp_kses sanitization applied on output is insufficient in this context because HTML entities within allowed attribute values survive normalization intact and are later evaluated by the jQuery(link.attr('href')) sink in wp-admin/js/common.js when a contextual help tab anchor is clicked.
Is CVE-2026-87915 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- last mo.
Exploit prediction
0.49% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
Affected products
- danieliser Popup Maker – Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/ea8b1eee-2e3f-4d61-b815-4ea0aaa188b5?source=cve
- plugins.trac.wordpress.org /browser/popup-maker/tags/1.24.0/classes/Admin/Subscribers/Table.php#L281
- plugins.trac.wordpress.org /browser/popup-maker/tags/1.24.0/classes/ListTable.php#L1408
- plugins.trac.wordpress.org /browser/popup-maker/tags/1.24.0/classes/Newsletters.php#L74
- plugins.trac.wordpress.org /browser/popup-maker/tags/1.24.0/classes/Newsletters.php#L273
- plugins.trac.wordpress.org /browser/popup-maker/tags/1.24.0/classes/Abstract/Database.php#L359
- plugins.trac.wordpress.org /browser/popup-maker/tags/1.24.0/classes/Newsletters.php#L59
- plugins.trac.wordpress.org /changeset?reponame=&new=3690634%40popup-maker%2Ftags%2F1.25.0&old=3648112%40popup-maker%2Ftags%2F1.24.0
- plugins.trac.wordpress.org /changeset/3690634/popup-maker/trunk/classes/Admin/Subscribers/Table.php
Sources
- CVE List CVE-2026-87915
- NVD CVE-2026-87915
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.