Stored XSS in Smarty PHP Template Engine via stats-video.php

Publication date: 2026-06-26

Last updated on: 2026-06-29

Assigner: HackerOne

Description

A missing sanitisation vulnerability exists with user input in the stats-video.php script. The way URLs to this script were constructed did not follow best practices, and the output of the Smarty custom helper function url was neither properly encoded nor sanitised, allowing user‑supplied input to be reflected without escaping.

CVSS Scores

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Meta Information

Published

2026-06-26

Last Modified

2026-06-29

Generated

2026-07-17

AI Q&A

2026-06-26

EPSS Evaluated

2026-07-16

NVD

CVE-2026-50745

EUVD

EUVD-2026-39605

Affected Vendors & Products

Vendor	Product	Version / Range
revive-adserver	revive_adserver	to 6.0.8 (exc)

Helpful Resources

Exploitability

CWE

KEV

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

Executive Summary

This vulnerability is a missing sanitisation issue in the stats-video.php script. Specifically, the URLs to this script were constructed improperly, and the output of the Smarty custom helper function 'url' was neither properly encoded nor sanitised. This allowed user-supplied input to be reflected in the output without escaping.

Impact Analysis

Because user input is reflected without proper sanitisation or escaping, this vulnerability can lead to security issues such as reflected cross-site scripting (XSS). An attacker could potentially inject malicious scripts that execute in the context of a user's browser, leading to information disclosure or manipulation of user interactions.

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