CVE-2026-4816
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Reflected XSS in Support Board v3.7.7 Enables Data Theft

Publication date: 2026-03-25

Last updated on: 2026-03-26

Assigner: Spanish National Cybersecurity Institute, S.A. (INCIBE)

Description
A Reflected Cross Site Scripting (XSS) vulnerability has been found in Support Board v3.7.7. This vulnerability allows an attacker to execute JavaScript code in the victim's browser by sending the victim a malicious URL using the 'search' parameter in '/supportboard/include/articles.php'. This vulnerability can be exploited to steal sensitive user data, such as session cookies, or to perform actions on behalf of the user.
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Meta Information
Published
2026-03-25
Last Modified
2026-03-26
Generated
2026-06-16
AI Q&A
2026-03-25
EPSS Evaluated
2026-06-15
NVD
CVE-2026-4816
EUVD
EUVD-2026-15417
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
schiocco support_board to 3.7.8 (exc)
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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.
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Executive Summary

This vulnerability is a Reflected Cross Site Scripting (XSS) issue found in Support Board version 3.7.7. It occurs when an attacker sends a victim a malicious URL containing harmful JavaScript code within the 'search' parameter of the '/supportboard/include/articles.php' page. When the victim clicks this URL, the malicious script executes in their browser.

This allows the attacker to run arbitrary JavaScript code in the context of the victim's browser session.

Compliance Impact

This Reflected Cross Site Scripting (XSS) vulnerability in Support Board v3.7.7 can be exploited to steal sensitive user data, such as session cookies, or to perform actions on behalf of the user.

Such unauthorized access and potential data theft could lead to non-compliance with data protection regulations like GDPR and HIPAA, which require safeguarding personal and sensitive information against unauthorized access and breaches.

Impact Analysis

The vulnerability can be exploited to steal sensitive user data such as session cookies, which can lead to account hijacking.

Additionally, an attacker could perform actions on behalf of the user without their consent, potentially leading to unauthorized operations within the affected application.

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