CVE-2025-3533 YouDianCMS index.html.Attackers cross site scripting

Medium 5.3 Published 13 Apr 2025 Updated 14 Apr 2025

Attackers can inject malicious scripts via the Parent argument in YouDianCMS, potentially leading to code execution or account takeover.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2025-3533?

CVE-2025-3533 is a medium-severity cross-site scripting vulnerability in YouDianCMS, published on 13 Apr 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

A vulnerability, which was classified as problematic, has been found in YouDianCMS 9.5.21. This issue affects some unknown processing of the file /App/Tpl/Admin/Default/Channel/index.html.Attackers. The manipulation of the argument Parent leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-94, CWE-79

Which versions are affected by CVE-2025-3533?

It affects 1 product.

Products include Youdiancms Youdiancms.

How do I fix CVE-2025-3533?

No fix has been published for CVE-2025-3533 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2025-3533 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-3533 exists.

Sources

Also known as GHSA-x36r-q6h9-f8g8.