CVE-2021-47938 ImpressCMS 1.4.2 Remote Code Execution via Autotasks
Authenticated attackers can execute arbitrary PHP code in ImpressCMS by injecting malicious code into the autotasks sat_code parameter.
- 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-2021-47938?
CVE-2021-47938 is a high-severity code injection vulnerability in ImpressCMS, published on 10 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
ImpressCMS 1.4.2 contains a remote code execution vulnerability in the autotasks administrative interface that allows authenticated attackers to execute arbitrary PHP code by injecting malicious code into the sat_code parameter. Attackers can authenticate, submit a POST request to /modules/system/admin.php?fct=autotasks&op=mod with crafted sat_code containing PHP commands, which creates an executable file that accepts arbitrary commands via GET parameters.
Weakness: CWE-94
Which versions are affected by CVE-2021-47938?
How do I fix CVE-2021-47938?
No fix has been published for CVE-2021-47938 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2021-47938 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47938 exists.
Sources
Also known as GHSA-5fc9-c3p9-h598.