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CVE-2026-5108

MEDIUM 4.4 CVSS 3.1
Published
August 5, 2026
Last modified
August 12, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

Description

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.

Affected WordPress components

  • Super Progressive Web Apps Plugin · super-progressive-web-apps
    Confirmed match Active
    Up to and including 2.2.43
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • superpwa Super Progressive Web Apps — Up to and including 2.2.43

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/super-progressive-web-apps/tags/2.2.41/public/js/register-sw.js#L177
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/super-progressive-web-apps/tags/2.2.41/public/sw.php#L386
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset?reponame=&new=3506063%40super-progressive-web-apps%2Ftrunk&old=3494263%40super-progressive-web-apps%2Ftrunk
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/0332e106-1f97-4c52-b084-ea15d31dee72?source=cve
  • nvd.nist.gov Official NVD record