Web Push Notifications <= 4.39.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'webpushr_notification_title' Post Meta Parameter
| CVE | CVE-2026-9729 |
|---|---|
| CVSS | 6.4 (Medium) |
| Publicly Published | July 22, 2026 |
| Last Updated | July 29, 2026 |
| Researcher |
Muhammad Yudha - DJ
|
Description
The Webpushr Push Notifications plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'webpushr_notification_title' and 'webpushr_notification_body' parameters in versions up to, and including, 4.39.0. This is due to insufficient input sanitization in the save_send_notification_flag() function and missing output escaping in the wpp_notification_box() function, which concatenates raw post meta values directly into HTML attribute and textarea contexts. 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.
Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.
References
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
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Vulnerability Details for Web Push Notifications – Webpushr
| Software Type | Plugin |
|---|---|
| Software Slug | webpushr-web-push-notifications (view on wordpress.org) |
| Patched? | No |
| Remediation | No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement. |
| Affected Version |
|
Recent vulnerabilities in Web Push Notifications – Webpushr
| # | Title | CVE ID | CVSS | Researchers | Date |
|---|---|---|---|---|---|
| 1 | Webpushr <= 4.38.0 - Unauthenticated Information Exposure | CVE-2026-24536 | Trương Hữu Phúc (truonghuuphuc) | January 25, 2026 | |
| 2 | Webpushr <= 4.35.0 - Reflected Cross-Site Scripting | CVE-2024-34369 | Dimas Maulana | May 3, 2024 | |
| 3 | Webpushr <= 4.34.0 - Missing Authorization to Unauthenticated Stored Cross-Site Scripting | CVE-2023-5620 | Krzysztof Zając | November 6, 2023 | |
| 4 | Webpushr <= 4.34.0 - Cross-Site Request Forgery to Local File Inclusion via menu | CVE-2023-35041 | Theodoros Malachias | October 19, 2023 |
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