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CVE-2025-59532

Codex has sandbox bypass due to bug in path configuration logic

HIGH
8.6
CVSS Score
Published: September 22, 2025 at 08:26 PM UTC
Updated: October 11, 2026 at 08:10 PM UTC
1 product affected across 1 vendorCodex CLI

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Severity
HIGH8.6
Exploit prediction
EPSS 0.9%
SSVC
No known exploit

Description

Codex CLI is a coding agent from OpenAI that runs locally. In versions 0.2.0 to 0.38.0, due to a bug in the sandbox configuration logic, Codex CLI could treat a model-generated cwd as the sandbox’s writable root, including paths outside of the folder where the user started their session. This logic bypassed the intended workspace boundary and enables arbitrary file writes and command execution where the Codex process has permissions - this did not impact the network-disabled sandbox restriction. This issue has been patched in Codex CLI 0.39.0 that canonicalizes and validates that the boundary used for sandbox policy is based on where the user started the session, and not the one generated by the model. Users running 0.38.0 or earlier should update immediately via their package manager or by reinstalling the latest Codex CLI to ensure sandbox boundaries are enforced. If using the Codex IDE extension, users should immediately update to 0.4.12 for a fix of the sandbox issue.

Affected

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

Codex CLI· Openai
90%
>= 0.2.0, < 0.39.0
Affected range stops below 0.39.0, so it looks safe — our inference, not a vendor statement

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 (3)

x_refsource_CONFIRM
Source: cverecord
https://github.com/openai/codex/security/advisories/GHSA-w5fx-fh39-j5rw
x_refsource_MISC
Source: cverecord
https://github.com/openai/codex/commit/8595237505a1e0faabc2af3db805b66ce3ae182d
x_refsource_MISC
Source: cverecord
https://github.com/openai/codex/releases/tag/rust-v0.39.0

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

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

CVSS

8.6HIGHGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-20

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