CVE-2023-44763 ConcreteCMS vulnerable to Stored Cross-site Scripting
Attackers can upload malicious PDF files to trigger Cross-Site Scripting, requiring administrators to manually exclude PDFs from allowed file types.
- 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-2023-44763?
CVE-2023-44763 is a medium-severity vulnerability in Concretecms Concrete Cms, published on 10 Oct 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Concrete CMS v9.2.1 is affected by an Arbitrary File Upload vulnerability via a Thumbnail file upload, which allows Cross-Site Scripting (XSS). NOTE: the vendor's position is that a customer is supposed to know that "pdf" should be excluded from the allowed file types, even though pdf is one of the allowed file types in the default configuration.
Weakness: CWE-434
Which versions are affected by CVE-2023-44763?
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-2023-44763?
No fix has been published for CVE-2023-44763 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-44763 being exploited?
There is no known exploitation of CVE-2023-44763 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-wrp2-6v6j-hfmg.