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CVE-2026-15797

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

CVSS 3.1 6.4 MEDIUMCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-15797

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-15797

Published

Popup Maker – Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "danieliser",
                    "product": "Popup Maker – Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "lessThanOrEqual": "1.24.0",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

Original source record · Cite this exact observation · Complete original publisher JSON