CVE-2026-21642
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2026-01-20

Last updated on: 2026-01-30

Assigner: HackerOne

Description
HackerOne community member Patrick Lang (7yr) has reported a reflected XSS vulnerability in the `banner-acl.php` and `channel-acl.php` scripts of Revive Adserver. An attacker can craft a specific URL that includes an HTML payload in a parameter. If a logged in administrator visits the URL, the HTML is sent to the browser and malicious scripts would be executed.
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Meta Information
Published
2026-01-20
Last Modified
2026-01-30
Generated
2026-05-07
AI Q&A
2026-01-20
EPSS Evaluated
2026-05-05
NVD
CVE-2026-21642
EUVD
EUVD-2026-3324
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
aquaplatform revive_adserver to 6.0.4 (inc)
Helpful Resources
Exploitability
CWE
CWE Icon
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
AI Powered Q&A
How can this vulnerability impact me? :

If exploited, this vulnerability can allow attackers to execute malicious scripts in the browser of an administrator. This can lead to unauthorized actions performed with the administrator's privileges, potential theft of sensitive information, session hijacking, or other malicious activities.


Can you explain this vulnerability to me?

This vulnerability is a reflected Cross-Site Scripting (XSS) issue in the 'banner-acl.php' and 'channel-acl.php' scripts of Revive Adserver. An attacker can create a specially crafted URL containing malicious HTML code in a parameter. When a logged-in administrator clicks this URL, the malicious code is executed in their browser.


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