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CVE-2026-5108— Super Progressive Web Apps <= 2.2.43 - Authenticated (Administrator+) Stored Cross-Site Scripting via Offline Message Setting

Quick assessment

Affected
superpwa Super Progressive Web Apps
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress Super Progressive Web Apps是WordPress基金会开源的一款协助网站实现渐进式Web应用功能的CMS插件。 WordPress Super Progressive Web Apps 2.2.43及之前版本存在跨站脚本漏洞，该漏洞源于输入清理和输出转义不足，离线消息值存储时未清理，通过wp_localize_script()传递时未转义，并在JavaScript snackbar组件中使用innerHTML渲染，可能导致经身份验证的攻击者（管理员及以上权限）注

CVSS 4.4 · Medium EPSS 0.31% · P22

Affected Version Matrix 1

VendorProduct Version RangeStatus
superpwa Super Progressive Web Apps ≤ 2.2.43 affected
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I. Basic Information for CVE-2026-5108

Vulnerability Information
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Vulnerability Title
Super Progressive Web Apps <= 2.2.43 - Authenticated (Administrator+) Stored Cross-Site Scripting via Offline Message Setting
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Super Progressive Web Apps 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Super Progressive Web Apps是WordPress基金会开源的一款协助网站实现渐进式Web应用功能的CMS插件。 WordPress Super Progressive Web Apps 2.2.43及之前版本存在跨站脚本漏洞，该漏洞源于输入清理和输出转义不足，离线消息值存储时未清理，通过wp_localize_script()传递时未转义，并在JavaScript snackbar组件中使用innerHTML渲染，可能导致经身份验证的攻击者（管理员及以上权限）注
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
superpwa Super Progressive Web Apps 0 ~ 2.2.43 -

II. Public POCs for CVE-2026-5108

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III. Intelligence Information for CVE-2026-5108

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Patches & Fixes for CVE-2026-5108 (2)

News Coverage for CVE-2026-5108 (1)

IV. Related Vulnerabilities

Same product: Super Progressive Web Apps
Same vendor: superpwa
Same weakness: CWE-79

V. Comments for CVE-2026-5108

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