PT-2026-3661 · Revive · Revive Adserver

Huynh Pham Thanh Luc + 1 · Published 2026-01-20 · Updated 2026-01-20 · CVE-2026-21664

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Revive Adserver (affected versions not specified)

Description A reflected Cross-Site Scripting (XSS) issue exists in the 'afr.php' delivery script. An attacker can craft a specific URL containing an HTML payload in a parameter. If a logged-in administrator visits this URL, the browser executes the malicious scripts.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-21664

Affected Products

Revive Adserver

References · 3

• https://osv.dev/vulnerability/CVE-2026-21664 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-21664 · Security Note
• https://hackerone.com/reports/3468169 · Note