RCE in Andreahaku Codex Mcp
CVE-2026-19329
A vulnerability was found in andreahaku codex_mcp up to 1ff521cc6cc57cfe56ddef946c644b8534771390. The affected element is an unknown function of the file src/codex-process-simple.ts of the component ask MCP Tool. The manipulation of the argument model results in command injection. The attack requires a local approach. This product does not use versioning. This is why information about affected and unaffected releases are unavailable. The project was informed of the problem early through an issue report but has not responded yet.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.006 (48.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Andreahaku Codex Mcp — versions 1ff521cc6cc57cfe56ddef946c644b8534771390
Weakness classification (CWE)
References
- vuldb.com/vuln/387163 (technical-description, vdb-entry)
- vuldb.com/vuln/387163/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-19329 (third-party-advisory)
- vuldb.com/submit/865246 (third-party-advisory)
- github.com/andreahaku/codex_mcp/issues/1 (issue-tracking)
- github.com/andreahaku/codex_mcp/ (product)
Frequently asked questions
- What is CVE-2026-19329?
- CVE-2026-19329 is a medium-severity vulnerability in Andreahaku Codex Mcp, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 5.3/10. Published 2026-08-09.
- How severe is CVE-2026-19329?
- Medium severity. CVSS v3 base score is 5.3 out of 10.