CVE-2023-44766 ConcreteCMS Cross-site Scripting vulnerability
An XSS vulnerability in Concrete CMS allows arbitrary code execution via SEO settings, though the vendor disputes this as an intended admin feature.
- 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-2023-44766?
CVE-2023-44766 is a medium-severity cross-site scripting vulnerability in Concretecms Concrete Cms, published on 6 Oct 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
A Cross Site Scripting (XSS) vulnerability in Concrete CMS v.9.2.1 allows an attacker to execute arbitrary code via a crafted script to the SEO - Extra from Page Settings. NOTE: the vendor disputes this because this SEO-related header change can only be made by an admin, and allowing an admin to place JavaScript there is an intentional customization feature.
Weakness: CWE-79
Which versions are affected by CVE-2023-44766?
2 open source packages ship an affected version, including concrete5/concrete5. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
concrete5/concrete5 Packagist | All versions to 9.2.1 | None |
concrete5/concrete5 Packagist | All versions to 9.2.1 | None |
Products include Concretecms Concrete Cms.
How do I fix CVE-2023-44766?
No fix has been published for CVE-2023-44766 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-2023-44766 being exploited?
There is no known exploitation of CVE-2023-44766 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Concretecms Concrete Cms
- CVE-2023-48648 Concrete CMS allows unauthorized access because directories can be created with insecure permissions
- CVE-2022-21829 Code injection in concrete CMS
- CVE-2021-22958 Server-Side Request Forgery vulnerability in concrete5
- CVE-2021-40098 Path traversal in n/a
- CVE-2026-8134 Concrete CMS Vulnerable to Relative Path Traversal
Sources
Also known as GHSA-437p-jfm4-2387.