CVE-2021-40103 Path traversal in n/a
Attackers can exploit path traversal in Concrete CMS to read arbitrary files and perform server-side request forgery.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-40103?
CVE-2021-40103 is a high-severity path traversal vulnerability in Concretecms Concrete Cms, published on 27 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in Concrete CMS through 8.5.5. Path Traversal can lead to Arbitrary File Reading and SSRF.
Weakness: CWE-22
Which versions are affected by CVE-2021-40103?
It affects 1 product.
Products include Concretecms Concrete Cms.
How do I fix CVE-2021-40103?
No fix has been published for CVE-2021-40103 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-2021-40103 being exploited?
There is no known exploitation of CVE-2021-40103 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-454q-hw5x-cp28.