CVE-2026-5108Network attack vector

Authenticated script execution via offline snackbar message

Published Aug 5, 2026 · Updated Aug 5, 2026

Stored XSS in SuperPWA Super Progressive Web Apps 2.2.43 and earlier allows remote authenticated users to execute scripts via an offline message. The plugin stores offline_message_txt without sanitization, passes it through wp_localize_script, and inserts it into the snackbar with innerHTML. Administrator-level access is required to set the payload, which executes in a visitor's browser when the offline snackbar appears.

CVSS severity4.4
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in SuperPWA Super Progressive Web Apps 2.2.43 and earlier allows remote authenticated users to execute scripts via an offline message. The plugin stores offline_message_txt without sanitization, passes it through wp_localize_script, and inserts it into the snackbar with innerHTML. Administrator-level access is required to set the payload, which executes in a visitor's browser when the offline snackbar appears.

The record

CVE
CVE-2026-5108
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
SuperPWA
Product
Super Progressive Web Apps
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.2.43

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

SuperPWA · Super Progressive Web Appsversion=0 <=2.2.43

Published CVSS scores

4.4WordfenceCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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