{"vulnerability": "ghsa-2mw5-23gm-pccq", "sightings": [{"uuid": "18caa615-d2f4-47d2-873f-c22e14f9ac6c", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "GHSA-2mw5-23gm-pccq", "type": "seen", "source": "https://gist.github.com/alon710/b029bbe534cb811529fb1bfee50ed025", "content": "# CVE-2026-73667: CVE-2026-73667: Remote Code Execution via OS Command Injection in OpenChoreo Workflow Plane\n\n> **CVSS Score:** 8.8\n> **Published:** 2026-09-02\n> **Full Report:** https://cvereports.com/reports/CVE-2026-73667\n\n## Summary\nAn authenticated remote code execution vulnerability exists in the OpenChoreo developer platform's Workflow Plane templates. The flaw occurs due to server-side string interpolation of workflow parameters into inline shell scripts and insecure shell parameter expansion. This allows low-privileged attackers to execute arbitrary shell commands inside privileged containers, leading to potential host privilege escalation.\n\n## TL;DR\nAuthenticated OS command injection in OpenChoreo workflow templates allows execution of arbitrary commands with container root privileges.\n\n## Exploit Status: POC\n\n## Technical Details\n\n- **CWE ID**: CWE-78\n- **Attack Vector**: Network (AV:N)\n- **CVSS Base Score**: 8.8\n- **Privileges Required**: Low (PR:L)\n- **Exploit Status**: Proof of Concept (PoC)\n- **KEV Status**: Not Listed\n\n## Affected Systems\n\n- OpenChoreo Workflow Plane\n- OpenChoreo Argo Workflows Integration\n- **OpenChoreo**: < 1.0.4 (Fixed in: `1.0.4`)\n- **OpenChoreo**: >= 1.1.0, < 1.1.4 (Fixed in: `1.1.4`)\n- **OpenChoreo**: >= 1.2.0-rc.1, < 1.2.0-rc.2 (Fixed in: `1.2.0-rc.2`)\n\n## Mitigation\n\n- Map workflow parameters to container environment variables instead of using raw string interpolation in inline shell scripts.\n- Utilize double-quoted variable expansion inside shell scripts to prevent token splitting and injection.\n- Enforce host-user namespace isolation ('hostUsers: false') for privileged workflow pods.\n- Employ base64-encoding to safely pass complex parameter vectors to inner loop parsing structures.\n\n**Remediation Steps:**\n1. Upgrade OpenChoreo deployments to version 1.0.4, 1.1.4, 1.2.0-rc.2, or higher.\n2. Audit custom workflow templates in use to ensure no legacy server-side interpolation placeholders exist inside inline command scripts.\n3. Enable Kubernetes Pod Security Standards or Gatekeeper policies to enforce 'hostUsers: false' on privileged workloads.\n\n## References\n\n- [GHSA-2mw5-23gm-pccq Advisory](https://github.com/openchoreo/openchoreo/security/advisories/GHSA-2mw5-23gm-pccq)\n- [NVD - CVE-2026-73667](https://nvd.nist.gov/vuln/detail/CVE-2026-73667)\n- [CVE.org Record](https://www.cve.org/CVERecord?id=CVE-2026-73667)\n\n\n---\n*Generated by [CVEReports](https://cvereports.com/reports/CVE-2026-73667) - Automated Vulnerability Intelligence*", "creation_timestamp": "2026-09-03T00:32:06.659354Z"}]}