CVE-2021-40108 Cross-site request forgery in n/a
Attackers can force authenticated users to create calendar events without consent due to missing token verification in Concrete CMS.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-40108?
CVE-2021-40108 is a high-severity vulnerability in Concretecms Concrete Cms, published on 27 Sep 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
An issue was discovered in Concrete CMS through 8.5.5. The Calendar is vulnerable to CSRF. ccm_token is not verified on the ccm/calendar/dialogs/event/add/save endpoint.
Weakness: CWE-352
Which versions are affected by CVE-2021-40108?
It affects 1 product.
Products include Concretecms Concrete Cms.
How do I fix CVE-2021-40108?
No fix has been published for CVE-2021-40108 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-40108 being exploited?
There is no known exploitation of CVE-2021-40108 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-9jj7-ch3r-h65g.