Answer in brief
CVE-2026-19591 records a Unknown severity vulnerability in CISA ADP Vulnrichment. The current sources do not mark it as known exploited. The current feed maps OpenAI/Codex CLI (generic), OpenAI/Codex Desktop (generic), OpenAI/Codex Desktop (generic), OpenAI/Codex Desktop (Microsoft Store package) (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps OpenAI/Codex CLI (generic), OpenAI/Codex Desktop (generic), OpenAI/Codex Desktop (generic), OpenAI/Codex Desktop (Microsoft Store package) (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| OpenAI/Codex CLIgeneric | 0.72.0 | Not reported |
| OpenAI/Codex Desktopgeneric | 260202.0859 | Not reported |
| OpenAI/Codex Desktopgeneric | 26.304.38 | Not reported |
| OpenAI/Codex Desktop (Microsoft Store package)generic | 26.304.38.0 | Not reported |
Published upstream
Sep 1, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 2, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 1, 2026
OpenAI Codex CLI for Windows, macOS, and Linux and Codex Desktop for Windows and macOS misclassified certain PowerShell commands as safe because their command-safety parser interpreted PowerShell's stop-parsing token (--%) differently than PowerShell itself. If a user opens an attacker-prepared repository and Codex follows its instructions, Codex can run a file-writing Git command without requesting user approval. On macOS and Linux, exploitation additionally requires separately installed PowerShell Core (pwsh) to be invoked. If filesystem protections permit the write, the command can modify Codex's configuration. If Codex later loads the modified configuration, it can launch an attacker-controlled MCP server and execute code with the user's privileges, allowing it to read, change, or delete files accessible to that account. The approval bypass does not disable filesystem sandboxing; the default filesystem sandbox on macOS and Linux can prevent writes outside permitted locations.
Quoted source text, attributed separately from HOL analysis.