CVE-2025-11421 code-projects Voting System candidates_edit.php cross site scripting

Medium 5.1 Published 8 Oct 2025 Updated 24 Feb 2026

Attackers can inject malicious scripts via candidate fields in the Voting System admin panel, potentially compromising user sessions and data.

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

What is CVE-2025-11421?

CVE-2025-11421 is a medium-severity cross-site scripting vulnerability in code-projects Voting System, published on 8 Oct 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

A flaw has been found in code-projects Voting System 1.0. The affected element is an unknown function of the file /admin/candidates_edit.php. This manipulation of the argument Firstname/Lastname/Platform causes cross site scripting. Remote exploitation of the attack is possible. The exploit has been published and may be used.

Weakness: CWE-94, CWE-79

Which versions are affected by CVE-2025-11421?

It affects 1 product.

Products include Fabian Voting System.

How do I fix CVE-2025-11421?

No fix has been published for CVE-2025-11421 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-2025-11421 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-11421 exists.

Sources

Also known as GHSA-v9jx-pc2p-jr8p.