CVE Catalog

CVE-2026-9729

MediumCVSS 6.4
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.33%

26th percentile - higher than 26% of all known CVEs

Summary

The Webpushr Push Notifications plugin for WordPress up to version 4.39.0 is vulnerable to Stored Cross-Site Scripting (XSS) via the 'webpushr_notification_title' and 'webpushr_notification_body' parameters. 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.

Risk Assessment

An authenticated attacker with contributor-level access or higher can inject arbitrary scripts that execute whenever a user accesses an injected page, potentially leading to session theft, defacement, or further attacks.

Recommendation

Immediately update the Webpushr Push Notifications plugin to the latest available version that includes security fixes.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS