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

> Authenticated attackers can execute arbitrary code via unsandboxed Twig evaluation in Craft CMS render-components action.

- **Severity:** High 8.7 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 Oct 2026
- **Updated:** 7 Oct 2026
- **Also known as:** GHSA-g48f-wc2q-4rrv, GHSA-x658-h3pq-chcg

## What is CVE-2026-105985?

CVE-2026-105985 is a high-severity code injection vulnerability in craftcms cms, published on 6 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official 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.

Weakness: CWE-1336 (Improper Neutralization of Special Elements Used in a Template Engine)

## Which versions are affected by CVE-2026-105985?


## How do I fix CVE-2026-105985?

No fix has been published for CVE-2026-105985 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-105985 being exploited?

There is no known exploitation of CVE-2026-105985 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-105985 and fix it if it is affected.

What it is: CVE-2026-105985 is a high-severity code injection vulnerability in craftcms cms, published on 6 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-105985 in the wild and no public exploit code.

Affected product: craftcms cms. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-105985/ (Markdown: https://insights.sbomify.com/CVE-2026-105985/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-105985
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-105985
- OSV: https://osv.dev/vulnerability/CVE-2026-105985

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-105985/
Summaries are generated and may contain mistakes; the official description above is the record.