CVE-2026-2222 code-projects Online Reviewer System btn_functions.php cross site scripting

Medium 4.8 Published 9 Feb 2026 Updated 23 Feb 2026

Remote attackers can execute arbitrary scripts via the firstname parameter in the admin user management interface, potentially compromising user sessions.

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

What is CVE-2026-2222?

CVE-2026-2222 is a medium-severity cross-site scripting vulnerability in code-projects Online Reviewer System, published on 9 Feb 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

A weakness has been identified in code-projects Online Reviewer System 1.0. Affected by this vulnerability is an unknown functionality of the file /system/system/admins/manage/users/btn_functions.php. Executing a manipulation of the argument firstname can lead to cross site scripting. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks.

Weakness: CWE-94, CWE-79

Which versions are affected by CVE-2026-2222?

It affects 1 product.

Products include Fabian Online Reviewer System.

How do I fix CVE-2026-2222?

No fix has been published for CVE-2026-2222 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-2026-2222 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2222 exists.

Public exploit code: 1 proofs of concept on GitHub.

Sources

Also known as GHSA-h4hx-hmx9-44gm.