ZDI-CAN-31270: ZDI-26-649: (Pwn2Own) OpenAI Codex Improper Neutralization of Control Sequences Remote Code Execution Vulnerability
Published Sep 10, 2026
·Updated
This vulnerability allows remote attackers to execute arbitrary code on affected installations of OpenAI Codex. User interaction is required to exploit this vulnerability in that the target must open a malicious folder. The ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-19591.
Affected Software
1 affected component
OpenAI Codex
Event History
Sep 10, 2026
Advisory Published
via ZDI·05:00 AM
Data Sourced
via ZDI·05:00 AM
Description
Frequently Asked Questions
1
What must an attacker do to exploit this issue?
The attacker must cause the target to open a malicious folder. Exploitation requires user interaction and can then allow arbitrary code execution on the affected Codex installation.
2
Is this exploitable remotely without user interaction?
No. Although the issue permits remote attackers to execute arbitrary code, the target must open a malicious folder for exploitation to succeed.
3
How severe is the issue?
ZDI assigned this vulnerability a CVSS rating of 7.8. It is tracked as CVE-2026-19591.