CVE-2026-1770 Improper Control of Dynamically-Managed Code Resources in Crafter Studio
Authenticated developers can bypass Groovy sandbox restrictions to execute arbitrary OS commands, leading to remote code execution.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-1770?
CVE-2026-1770 is a medium-severity code injection vulnerability in CrafterCMS, published on 2 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Improper Control of Dynamically-Managed Code Resources vulnerability in Crafter Studio of Crafter CMS allows authenticated developers to execute OS commands via Groovy Sandbox Bypass. By inserting malicious Groovy elements, an attacker may bypass sandbox restrictions and obtain RCE (Remote Code Execution).
Weakness: CWE-913
Which versions are affected by CVE-2026-1770?
2 open source packages ship an affected version, including org.craftercms:craftercms.
| Package | Affected | Fixed in |
|---|---|---|
org.craftercms:craftercms Maven | From 4.0.0 | 4.5.0 |
org.craftercms:craftercms Maven | From 4.0.0 | 4.5.0 |
How do I fix CVE-2026-1770?
Upgrade org.craftercms:craftercms to 4.5.0 or later.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-1770 being exploited?
There is no known exploitation of CVE-2026-1770 in the wild and no public exploit code.
Sources
Also known as GHSA-gj28-gw7w-3pxc.