CVE-2023-28819 Concrete CMS (previously concrete5) is vulnerable to stored XSS in uploaded file and folder names
Attackers can inject malicious scripts via uploaded file and folder names in Concrete CMS, potentially leading to session hijacking or code execution.
- 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-2023-28819?
CVE-2023-28819 is a low-severity cross-site scripting vulnerability in Concretecms Concrete Cms, published on 28 Apr 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
Concrete CMS (previously concrete5) versions 8.5.12 and below, 9.0.0 through 9.0.2 is vulnerable to Stored XSS in uploaded file and folder names.
Weakness: CWE-79
Which versions are affected by CVE-2023-28819?
2 open source packages ship an affected version, including concrete5/concrete5. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
concrete5/concrete5 Packagist | All versions | 9.1.0 |
concrete5/concrete5 Packagist | All versions | 9.1.0 |
Products include Concretecms Concrete Cms.
How do I fix CVE-2023-28819?
Upgrade concrete5/concrete5 to 9.1.0 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-2023-28819 being exploited?
There is no known exploitation of CVE-2023-28819 in the wild and no public exploit code.
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-474f-mcjv-pgrm.