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CVE-2026-15797— Popup Maker <= 1.24.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via post_title

Quick assessment

Affected
danieliser Popup Maker – Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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 sanitizat

CVSS 6.4 · Medium
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I. Basic Information for CVE-2026-15797

Vulnerability Information

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Vulnerability Title
Popup Maker <= 1.24.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via post_title
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
danieliser Popup Maker – Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder 0 ~ 1.24.0 -

II. Public POCs for CVE-2026-15797

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III. Intelligence Information for CVE-2026-15797

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Patches & Fixes for CVE-2026-15797 (1)

Vendor Advisories for CVE-2026-15797 (1)

Vendor Pages for CVE-2026-15797 (2)

Other References for CVE-2026-15797 (4)

Other References for CVE-2026-15797 (3)

IV. Related Vulnerabilities

Same product: Popup Maker – Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder
Same vendor: danieliser
Same weakness: CWE-79

V. Comments for CVE-2026-15797

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