CVE-2021-4254 ctrlo lenio Notice main.tt cross site scripting

Low 3.5 Published 18 Dec 2022 Updated 15 Apr 2025

Remote attackers can inject malicious scripts via the notice text field in the lenio web application, potentially compromising user sessions.

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-2021-4254?

CVE-2021-4254 is a low-severity cross-site scripting vulnerability in ctrlo lenio, published on 18 Dec 2022. 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 vulnerability has been found in ctrlo lenio and classified as problematic. Affected by this vulnerability is an unknown functionality of the file views/layouts/main.tt of the component Notice Handler. The manipulation of the argument notice.notice.text leads to cross site scripting. The attack can be launched remotely. The name of the patch is aa300555343c1c081951fcb68bfb6852fbba7451. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-216211.

Weakness: CWE-707

Which versions are affected by CVE-2021-4254?

It affects 1 product.

Products include Ctrlo Lenio.

How do I fix CVE-2021-4254?

No fix has been published for CVE-2021-4254 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-2021-4254 being exploited?

There is no known exploitation of CVE-2021-4254 in the wild and no public exploit code.

Sources

Also known as GHSA-6923-59ph-gq5m.