Cross-site scripting in SuperPWA Super Progressive Web Apps
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- High
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-5108
- 2026-10-03 Alias added: GHSA-p46p-m4cq-5fh8
References
Other 4
- https://www.wordfence.com/threat-intel/vulnerabilities/id/0332e106-1f97-4c52-b084-ea15d31dee72?source=cve
- https://plugins.trac.wordpress.org/browser/super-progressive-web-apps/tags/2.2.41/public/sw.php#L386
- https://plugins.trac.wordpress.org/browser/super-progressive-web-apps/tags/2.2.41/public/js/register-sw.js#L177
- https://plugins.trac.wordpress.org/changeset?reponame=&new=3506063%40super-progressive-web-apps%2Ftrunk&old=3494263%40super-progressive-web-apps%2Ftrunk
More SuperPWA vulnerabilities
- TI-2023-26140 WordPress Super Progressive Web Apps plugin <= 2.2.21 - Broken Access Control vulnerability CVSS 3.1MEDIUM 4.3
Sources
- CVE-2026-5108 · CVE Program
- CVE-2026-5108 · NVD
- FIRST EPSS
- GHSA-p46p-m4cq-5fh8 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences