CVE-2021-22951 Password exposure in concrete5/core
Attackers can bypass password protection to view sensitive files in Concrete CMS via the view_inline feature.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-22951?
CVE-2021-22951 is a high-severity missing authorization vulnerability in Concretecms Concrete Cms, published on 19 Nov 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Unauthorized individuals could view password protected files using view_inline in Concrete CMS (previously concrete 5) prior to version 8.5.7. Concrete CMS now checks to see if a file has a password in view_inline and, if it does, the file is not rendered.For version 8.5.6, the following mitigations were put in place a. restricting file types for view_inline to images only b. putting a warning in the file manager to advise users.Credit for discovery: "Solar Security Research Team"Concrete CMS security team CVSS scoring is 5.3: AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NThis fix is also in Concrete version 9.0.0
Weakness: CWE-639
Which versions are affected by CVE-2021-22951?
2 open source packages ship an affected version, including concrete5/core. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
concrete5/core Packagist | All versions | 8.5.7 |
concrete5/core Packagist | All versions | 8.5.7 |
Products include Concretecms Concrete Cms.
How do I fix CVE-2021-22951?
Upgrade concrete5/core to 8.5.7 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2021-22951 being exploited?
There is no known exploitation of CVE-2021-22951 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-rhf5-f553-xg82.