CVE-2024-1246 Concrete CMS in version 9 before 9.2.5 is vulnerable to reflected XSS via the Image URL Import Feature

Low 2.0 Published Updated

A rogue administrator can inject malicious code via the Image URL Import Feature, leading to reflected XSS execution in website users' browsers.

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
Available

What is CVE-2024-1246?

CVE-2024-1246 is a low-severity cross-site scripting vulnerability in Concretecms Concrete Cms, published on 9 Feb 2024. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

Concrete CMS in version 9 before 9.2.5 is vulnerable to reflected XSS via the Image URL Import Feature due to insufficient validation of administrator provided data. A rogue administrator could inject malicious code when importing images, leading to the execution of the malicious code on the website user’s browser. The Concrete CMS Security team scored this 2 with CVSS v3 vector AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N. This does not affect Concrete versions prior to version 9.

Weakness: CWE-79, CWE-20

Which versions are affected by CVE-2024-1246?

2 open source packages ship an affected version, including concrete5/concrete5. It affects 1 product.

PackageAffectedFixed in
concrete5/concrete5 PackagistFrom 9.0.0RC19.2.5
concrete5/concrete5 PackagistFrom 9.0.0RC19.2.5

Products include Concretecms Concrete Cms.

How do I fix CVE-2024-1246?

Upgrade concrete5/concrete5 to 9.2.5 or later.

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-2024-1246 being exploited?

There is no known exploitation of CVE-2024-1246 in the wild and no public exploit code.

All Concretecms Concrete Cms vulnerabilities

Sources

Also known as GHSA-9v3w-cj7m-qh5g.

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