ZDI-CAN-31274: ZDI-26-648: (Pwn2Own) OpenAI Codex External Control of System or Configuration Setting 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 visit a malicious page or open a malicious file. The ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-19590.
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 visit a malicious page or open a malicious file. Exploitation then allows the remote attacker to execute arbitrary code on the affected OpenAI Codex installation.
2
Is user interaction required?
Yes. The target must visit a malicious page or open a malicious file for exploitation to occur.