CVE-2021-40099 Code injection in n/a
Attackers can achieve remote code execution by exploiting insecure HTTP fetching of update JSON schemes in Concrete CMS.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-40099?
CVE-2021-40099 is a high-severity code injection vulnerability in Concretecms Concrete Cms, published on 24 Sep 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
An issue was discovered in Concrete CMS through 8.5.5. Fetching the update json scheme over HTTP leads to remote code execution.
Which versions are affected by CVE-2021-40099?
It affects 1 product.
Products include Concretecms Concrete Cms.
How do I fix CVE-2021-40099?
No fix has been published for CVE-2021-40099 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2021-40099 being exploited?
There is no known exploitation of CVE-2021-40099 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-25jh-rpgw-34vr.