CVE-2026-19591
ZDI-26-649: (Pwn2Own) OpenAI Codex Improper Neutralization of Control Sequences Remote Code Execution Vulnerability
Published Sep 10, 2026
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.
Timeline
Detection, updates, and resolution for this record.
Sep 10, 2026 · Catalog
Detected
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.
Sources
- CVE.orgCVE-2026-19591
Official CVE identifier
cve.org - FIRST EPSSCVE-2026-19591
30-day exploitation probability 0.3%
first.org - Zero Day InitiativeZDI-26-649
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.
zerodayinitiative.com