CVE-2026-21642

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.

PUBLISHED Reserved 2026-01-01 | Published 2026-01-20 | Updated 2026-01-21 | Assigner hackerone

Product status

References

hackerone.com/reports/3470970

cve.org (CVE-2026-21642)

nvd.nist.gov (CVE-2026-21642)

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