CVE-2021-40097 Path traversal in n/a
Authenticated attackers can exploit a path traversal vulnerability in Concrete CMS to upload and execute arbitrary PHP code, leading to remote code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-40097?
CVE-2021-40097 is a high-severity path traversal vulnerability in Concretecms Concrete Cms, published on 27 Sep 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An issue was discovered in Concrete CMS through 8.5.5. Authenticated path traversal leads to to remote code execution via uploaded PHP code, related to the bFilename parameter.
Weakness: CWE-22
Which versions are affected by CVE-2021-40097?
It affects 1 product.
Products include Concretecms Concrete Cms.
How do I fix CVE-2021-40097?
No fix has been published for CVE-2021-40097 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2021-40097 being exploited?
There is no known exploitation of CVE-2021-40097 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-w8hm-wr4r-3r8f.