CVE-2026-19590

HIGH
7.3
CVSS Score
Published: September 1, 2026 at 05:04 PM UTC
Updated: September 3, 2026 at 03:34 PM UTC
1 product affected across 1 vendorCodex Desktop

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Severity
HIGH7.3
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

OpenAI Codex Desktop for Windows and macOS could execute attacker-controlled Git hooks because automated Git operations trusted the repository's local core.hooksPath setting. If a user opens an attacker-prepared repository whose preserved .git/config points core.hooksPath to an attacker-controlled directory, Codex can run a malicious hook while processing the repository. The hook executes outside Codex's command sandbox, without user approval, and with the user's privileges, allowing it to 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 attacker-controlled repository-local configuration required for exploitation.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

26.304.38 ≤ v ≤ 26.513.4082126.304.38.0 ≤ v ≤ 26.513.4821.0260202.0859 ≤ v ≤ 26.513.3131326.304.3826.304.38.0260202.0859
Vendor states this is fixed in 26.519.2081.0 (unaffected)
Vendor states this is fixed in 26.519.21041 (unaffected)
Vendor states this is fixed in 26.519.22136 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.3HIGHCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusUNDERGOING ANALYSIS
CWE
CWE-427

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