CVE Catalog

CVE-2026-5108

MediumCVSS 4.4
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.25%

16th percentile - higher than 16% of all known CVEs

Summary

The Super Progressive Web Apps plugin for WordPress up to version 2.2.43 is vulnerable to Stored Cross-Site Scripting (XSS) via the `superpwa_settings[offline_message_txt]` setting. The offline message value is stored without sanitization, passed to the frontend via `wp_localize_script()` without escaping, and rendered using `innerHTML` in the JavaScript snackbar component. This allows authenticated attackers with Administrator-level access or above to inject arbitrary web scripts that execute whenever a user triggers the offline snackbar.

Risk Assessment

The risk to the organization includes session hijacking of administrators or other users, data theft, and content modification. However, the attack requires an administrator account, limiting scenarios to insider threats or compromised accounts.

Recommendation

Immediately update the Super Progressive Web Apps plugin to the latest patched version. Additionally, restrict access to administrator accounts and regularly audit user permissions.

Related vulnerabilities

Original NVD description (English source)

The Super Progressive Web Apps plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `superpwa_settings[offline_message_txt]` setting in all versions up to, and including, 2.2.43. This is due to insufficient input sanitization and output escaping. The offline message value is stored without sanitization, passed to the frontend via `wp_localize_script()` without escaping, and rendered using `innerHTML` in the JavaScript snackbar component. This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user triggers the offline snackbar.

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