Vulnerability · Published Sep 1, 2026 · Assigned by OAI
CVE-2026-19593
Critical 9.8
In plain English
A critical-severity security flaw in Codex Desktop from OpenAI. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities).
Official description
OpenAI Codex Desktop for Windows and macOS automatically inspected Git metadata and working-tree status when a user opened a workspace. If the workspace contains a repository with preserved attacker-controlled .git/config, the attr.tree setting and a configured clean or process filter can cause Git to run an attacker-controlled program. The program runs outside Codex's command sandbox with the signed-in user's privileges, without a workspace-trust prompt, command approval, or interaction with a model. The attacker can read, modify, or delete files and access credentials available to that user. Exploitation requires Git to be available on PATH and the user to open the attacker-prepared repository with its local Git configuration intact. An ordinary Git clone does not copy the source repository's .git/config and is not sufficient by itself.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| OpenAI | Codex Desktop | 260202.0859 – through 26.513.31313 |
| OpenAI | Codex Desktop | 26.304.38 – through 26.513.40821 |
| OpenAI | Codex Desktop (Microsoft Store package) | 26.304.38.0 – through 26.513.4821.0 |
Weakness: CWE-15 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H