CVE-2025-10331 cdevroe unmark Marks.php cross site scripting

Medium 5.1 Published 13 Sep 2025 Updated 15 Sep 2025

Remote attackers can execute arbitrary scripts via the Title argument in Marks.php, potentially compromising user sessions or 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-2025-10331?

CVE-2025-10331 is a medium-severity cross-site scripting vulnerability in cdevroe unmark, published on 13 Sep 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 vulnerability has been found in cdevroe unmark up to 1.9.3. This issue affects some unknown processing of the file /application/controllers/Marks.php. Such manipulation of the argument Title leads to cross site scripting. The attack can be executed 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-2025-10331?

It affects 1 product.

Products include Unmark Unmark.

How do I fix CVE-2025-10331?

No fix has been published for CVE-2025-10331 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-2025-10331 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-10331 exists.

Sources

Also known as GHSA-777c-3vhg-hgfc.