CyberRota Analysis
This is a medium severity vulnerability with a CVSS score of 6.1. See the original NVD description below for full technical details.
CVE
CVE-2026-21642
Severity
MEDIUM
CVSS
6.1
EPSS
0.16%
Original NVD 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.
Related CVEs
Other vulnerabilities affecting the same vendor(s)