Skip to content
← archivevulnerability · 23 Sep 2026 · 18:57 UTC

GHSA-jjq7-m736-w977: OpenC3 COSMOS: Authenticated remote code execution via the user-writable config overlay (table definitions, cm

VULNCVE-2026-77602source · GTH
HIGHCritical vulnerability — CVSS 9.9
What to do
  • Critical severity — schedule an urgent patch.

last 60 dispatches · spectrum

### Summary COSMOS reads configuration from a user-writable overlay (`targets_modified/`) before the read-only plugin-installed `targets/` tree, and the config subsystem executes code on those files: `ConfigParser` renders every file as ERB by default, a `GENERIC_READ_CONVERSION` / `GENERIC_WRITE_CONVERSION` block is evaluated as code by `GenericConversion` (Ruby and Python), and the Script Runner suite analysis `require`s a procedure file. …

grounded ✓primary source ↗
Early access

Get the next one first.

Early access opens the actor API and MCP server first, plus alerts when an adversary you follow lands on the wire. One email when it's ready. Nothing else, ever.

bot-protected