CuraSec

Plan active

Marimo Notebook Flaw Enables MCP Subprocess Execution on Open

2026-08-26 11:42 UTC · The Hacker News · read the source ↗ #mcp-security#notebook-vulnerability#python
  • Engineer — Plan: Teams using Marimo in AI/ML workflows should update to the patched version; the attack surface (opening a crafted notebook in edit mode triggers a local subprocess via MCP) is a real supply-chain-style risk, but no KEV listing, public PoC, or active exploitation signals mean this isn’t an emergency patch.
  • SOC/IR — Skip
  • Leader — Skip
This entry was curated and judged by AI (Claude) with automated enrichment (CISA KEV / EPSS / public PoC). Verify against the original source before acting. Found a bad verdict? Report it — confirmed errors go to the corrections log.