CVE-2026-19592Public exploit

Code execution via repository-controlled Git fsmonitor helper

Published Sep 1, 2026 · Updated Sep 2, 2026

Code execution in OpenAI Codex CLI and Codex Desktop allows local users to run code by opening an attacker-prepared Git repository. Git metadata collection honored the repository-local core.fsmonitor value and launched its configured helper outside the Codex sandbox and approval flow. Exploitation requires a repository copied with its .git/config intact; the helper runs with the user's privileges and can read, change, or delete accessible files.

CVSS severity7.3
High
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code execution in OpenAI Codex CLI and Codex Desktop allows local users to run code by opening an attacker-prepared Git repository. Git metadata collection honored the repository-local core.fsmonitor value and launched its configured helper outside the Codex sandbox and approval flow. Exploitation requires a repository copied with its .git/config intact; the helper runs with the user's privileges and can read, change, or delete accessible files.

The record

CVE
CVE-2026-19592
Published
Sep 1, 2026
Updated
Sep 2, 2026
Vendor
OpenAI
Product
Codex Desktop
Classifications
CWE-15, T1204.002
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=260202.0859 <=26.513.31313
  2. Affected versionversion=26.304.38.0 <=26.513.4821.0
  3. Affected versionversion=26.304.38 <=26.513.40821

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

OpenAI · Codex Desktopversion=260202.0859 <=26.513.31313; version=26.304.38.0 <=26.513.4821.0; version=26.304.38 <=26.513.40821
OpenAI · Codex CLIversion=0.102.0 <=0.130.0

Published CVSS scores

7.3GitHub Advisory DatabaseCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-15External Control of System or Configuration Setting
T1204.002Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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