CVE-2026-19593

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-19593
StatePUBLISHED
AssignerOAI
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-01 18:17:40 UTC
Updated2026-09-02 18:19:16 UTC
DescriptionOpenAI 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.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.002900000 probability, percentile 0.212350000 (date 2026-09-06)

Problem Types: CWE-15 | CWE-15 CWE-15: External Control of System or Configuration Setting

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA OpenAI Codex Desktop affected 260202.0859 26.513.31313 custom macOS
CNA OpenAI Codex Desktop unaffected 26.519.22136 macOS
CNA OpenAI Codex Desktop affected 26.304.38 26.513.40821 custom Windows
CNA OpenAI Codex Desktop unaffected 26.519.21041 Windows
CNA OpenAI Codex Desktop Microsoft Store Package affected 26.304.38.0 26.513.4821.0 custom Windows
CNA OpenAI Codex Desktop Microsoft Store Package unaffected 26.519.2081.0 Windows

References

ReferenceSourceLinkTags
openai.com/codex 8f4f43ab-ba69-4d92-aa1d-d772184d6fb7 openai.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Satoki Tsuji (@satoki00) / Ikotas Labs, Inc. (en)

Additional Advisory Data

Solutions

CNA: Update Codex Desktop for macOS to application version 26.519.22136 or later, or Codex Desktop for Windows to application version 26.519.21041 (Microsoft Store package 26.519.2081.0) or later.

Workarounds

CNA: Until updated, do not open attacker-supplied workspace folders that retain untrusted .git metadata.

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