CVE-2021-20682 OS Command Injection in baserCMS
Remote attackers with administrative privileges can execute arbitrary OS commands on baserCMS installations.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-20682?
CVE-2021-20682 is a high-severity command injection vulnerability in Basercms Basercms, published on 26 Mar 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
baserCMS versions prior to 4.4.5 allows a remote attacker with an administrative privilege to execute arbitrary OS commands via unspecified vectors.
Weakness: CWE-78
Which versions are affected by CVE-2021-20682?
2 open source packages ship an affected version, including baserproject/basercms. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
baserproject/basercms Packagist | All versions | 4.4.5 |
baserproject/basercms Packagist | All versions | 4.4.5 |
Products include Basercms Basercms.
How do I fix CVE-2021-20682?
Upgrade baserproject/basercms to 4.4.5 or later.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2021-20682 being exploited?
There is no known exploitation of CVE-2021-20682 in the wild and no public exploit code.
Other vulnerabilities in Basercms Basercms
- CVE-2023-25654 baserCMS File Uploader Remote Code Execution (RCE) vulnerability
- CVE-2023-25655 baserCMS allows any file to be uploaded
- CVE-2017-10842 baserCMS SQL Injection vulnerability
- CVE-2026-30880 baserCMS: OS command injection vulnerability in installer
- CVE-2026-21861 baserCMS: OS Command Injection Leading to Remote Code Execution (RCE)
Sources
Also known as GHSA-g39q-f4rm-85x4.