gcdRadar
archive/Patch now/AIR-2026-0981
closedclosed 6 Mar 2026Patch now2 Disclosed vulnerabilityAI

GitHub Copilot CLI shell tool arbitrary code execution vulnerability

GitHub Copilot CLI

GitHub Copilot CLI contained a vulnerability allowing arbitrary code execution through crafted bash parameter expansion patterns. The issue was patched in version 0.0.423 following vendor disclosure.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

CVSS
7.5
EPSS
<0.01 · top 59% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
6 Mar 2026
last update
6 Mar 2026
CVE ids
CVE-2026-29783other records

Timeline · 1

  1. 6 Mar 2026CVE-2026-29783: The shell tool within GitHub Copilot CLI versions prior to and including 0.0.422 can allow arbitrary code execution through…

Sources · 1

Advisories and databases

  1. 2026-03-06
    CVE-2026-29783: The shell tool within GitHub Copilot CLI versions prior to and including 0.0.422 can allow arbitrary code execution through…
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-29783

Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.

Classification

lane
Patch now
AI role
Attack on AI
categories
Infrastructure vulnerabilityPrompt injection
severity
2 · Disclosed vulnerability
fix status
Fix status unknown
targets
Microsoft, Framework / tooling
owasp llm top 10
LLM01:2025 Prompt InjectionLLM03:2025 Supply Chain
mitre atlas
AML.T0051 LLM Prompt Injection
tags
command-injectiongithub-copilot
dates
happened 6 Mar 2026 · first reported 6 Mar 2026
origin
NVD
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
record
confidence 0.95 · created 2026-10-18 10:04Z · updated 2026-10-18 10:04Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

This record as a short Markdown brief, for a ticket, a chat or a coding agent.

the brief as text
# GitHub Copilot CLI shell tool arbitrary code execution vulnerability

https://gcdradar.vercel.app/incidents/github-copilot-cli-shell-tool-arbitrary-code-execution-vulne · AIR-2026-0981 · closed 2026-03-06

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-03-06
- AI role: Attack on AI
- Products: GitHub Copilot CLI
- CVE ids: CVE-2026-29783
- CVSS: 7.5

## Summary

GitHub Copilot CLI contained a vulnerability allowing arbitrary code execution through crafted bash parameter expansion patterns. The issue was patched in version 0.0.423 following vendor disclosure.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-03-06: CVE-2026-29783: The shell tool within GitHub Copilot CLI versions prior to and including 0.0.422 can allow arbitrary code execution through… (https://nvd.nist.gov/vuln/detail/CVE-2026-29783)

## Sources

- 2026-03-06 NVD: CVE-2026-29783: The shell tool within GitHub Copilot CLI versions prior to and including 0.0.422 can allow arbitrary code execution through… https://nvd.nist.gov/vuln/detail/CVE-2026-29783

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

Related

  1. closed9.9
    Semantic Kernel RCE Vulnerability in Microsoft Semantic Kernel Search Plugin

    Research · since 7 May 2026 · updated 30 Jun 2026 · CVE-2026-26030

    AI
  2. closed6.6
    MCP servers & tools CVE-2026-44192: Path Traversal Flaw in Ansible Lightspeed MCP Server

    Patch now · Disclosed · since 22 Jul 2026 · CVE-2026-44192

    AI
  3. closed8.5
    GitHub Copilot CVE-2026-45033: GitHub Copilot CLI Arbitrary Code Execution

    Patch now · Disclosed · since 13 May 2026 · CVE-2026-45033

    AI
  4. closed
    LangChain family RCE Vulnerabilities in LLM-Integrated Applications via Prompt Injection

    Research · since 27 Feb 2025

    AI
  5. closed9.8
    Langflow CVE-2026-27966: Langflow Remote Code Execution in CSV Agent

    Patch now · Disclosed · since 27 Feb 2026 · updated 27 Feb 2026 · CVE-2026-27966

    AI
  6. closed9.0
    Flowise CVE-2026-73487: Flowise prompt injection bypass leads to RCE and SSRF

    Patch now · Disclosed · since 7 Oct 2026 · updated 7 Oct 2026 · CVE-2026-73487

    AI