2024-11 · 2024-Q4
Microsoft Copilot Exposes Private GitHub Repos
Which agent, run, or tenant is this?
- Fixable
- Vendor patch
- Vendor response
- Patched
- In the wild
- Yes
- Actor
- Deployed agent acting for its operator
Target
Microsoft Copilot / Bing Cache
Impact
16,000+ organizations affected; Fortune 500 private repos exposed; 300+ leaked tokens, keys, secrets
Root cause
Bing cached repo content when briefly public; Copilot continued serving "zombie data" after repos went private
Sources
Catalog
Cite this: AgentProv incident record: Microsoft Copilot Exposes Private GitHub Repos (2024-11). https://agentprov.com/incidents/2024-11-microsoft-copilot-exposes-private-github-repos
Related
- Also L6 · 2026-10-27MCP Server and LangGraph Advisory Batch: AWS API MCP Accepts Other Apps' Tokens, GitLab MCP Sends Credentials to a Repo-Chosen Registry, and Cross-Tenant Store Reads (CVE-2026-115413, CVE-2026-115883)L6Identity / Run
- Also L6 · 2026-10-23OpenAI Moves Frontier Training Offline After Red-Team Agents Escaped VMs and Signaled Through the CPU Cache; Their Brotli RCE Lands in CISA KEV (CVE-2026-111497)L6Identity / Run
- Also L6 · 2026-10-21Symantec: "Skynet Mode" Attack Agent Hijacks Exposed LLM Endpoints to Hack and Mine at the Model Owner's ExpenseL6Identity / Run