CVE-2026-78293
Received Received - Intake

Unauthenticated XSS in WP w3all phpBB

Publication date: 2026-08-27

Last updated on: 2026-08-27

Assigner: Patchstack

Description
Unauthenticated Cross Site Scripting (XSS) in WP w3all phpBB <= 3.0.6 versions.

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Meta Information

Published
2026-08-27
Last Modified
2026-08-27
Generated
2026-08-27
AI Q&A
2026-08-27
EPSS Evaluated
N/A
NVD
CVE-2026-78293
EUVD
EUVD-2026-66947

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
w3all wp_w3all_phpbb to 3.0.6 (inc)
w3all phpbb to 3.0.6 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

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Executive Summary

CVE-2026-78293 is an Unauthenticated Cross Site Scripting (XSS) vulnerability affecting the WP w3all phpBB plugin versions 3.0.6 and earlier. It allows attackers to inject malicious scripts into web pages viewed by users.

Detection Guidance

Detection involves checking if the WP w3all phpBB plugin version is 3.0.6 or earlier. Inspect WordPress plugin files or use commands like 'grep -r "wp-w3all" /path/to/plugins/' to locate the plugin. Verify the version in the plugin's main file or WordPress admin panel.

Impact Analysis

This vulnerability could allow attackers to execute malicious scripts when users visit your site, potentially leading to stolen data, unauthorized actions, or malicious redirects. Users might see unwanted ads or be redirected to harmful sites.

Compliance Impact

This XSS vulnerability could lead to data breaches, compromising user data and violating GDPR or HIPAA compliance. Unauthorized script execution may expose sensitive information, resulting in legal and regulatory penalties.

Mitigation Strategies

Update the WP w3all phpBB plugin to version 3.0.7 or later immediately. If updating is not possible, disable the plugin temporarily or seek help from your hosting provider or web developer. Enable auto-updates for vulnerable plugins if using Patchstack.

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