CVE-2026-19592

Severity: high (CVSS 7.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-01 · updated 2026-09-02
Weakness: CWE-15

Description

OpenAI Codex CLI for Windows, macOS, and Linux and Codex Desktop for Windows and macOS automatically collected Git repository metadata without disabling the repository-local core.fsmonitor setting. If a user opens or uses an attacker-prepared repository whose preserved .git/config sets core.fsmonitor to an attacker-controlled filesystem-monitor helper, Git can execute that helper while Codex collects repository metadata. The helper runs outside Codex's command sandbox and without a user-approval prompt, allowing attacker-controlled code to run with the user's privileges. The code can read, change, or delete the user's files and access other resources available to the user's account. An ordinary Git clone does not preserve the source repository's local .git/config; exploitation requires a repository delivered or copied with that configuration intact.

Affected products

OpenAI Codex CLI: from 0.102.0 through 0.130.0
OpenAI Codex Desktop: from 260202.0859 through 26.513.31313; from 26.304.38 through 26.513.40821
OpenAI Codex Desktop (Microsoft Store package): from 26.304.38.0 through 26.513.4821.0

References

https://github.com/openai/codex/pull/22652

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