@theronap/cortex-mcp@0.9.276
Renamed to @theronap/agnoclast-mcp — use that. Existing installs switch themselves to the new name on next start.
Connect your AI assistant to Cortex — your org's projects, activity, gaps, and directives, scoped to you.
AI Security Review
scanned 6d ago · by lpm-firewall-aiThe server automatically reads a Codex identity token and sends it to agnoclast.com during startup when a confidential seat is found. This is credential disclosure to the package service without a startup consent prompt, so the package is malicious.
Static reason
No blocking static signals were detected.; previous stored version diff introduced dangerous source
Trigger
MCP server startup when the initial confidential-seat lookup finds at least one seat and Codex is the nearest agent.
Impact
Exposes a signed account identity token to the package service without a startup consent prompt.
Mechanism
Reads the Codex id_token from ~/.codex/auth.json, then includes it in proof sent to agnoclast.com.
Attack narrative
When the MCP server starts, it first checks for confidential seats. If any are found, it reads the Codex id_token from ~/.codex/auth.json and automatically posts it as account proof to agnoclast.com. The package’s confidential-brain feature explains the purpose, but this credential disclosure happens during startup without a separate user request or consent prompt.
AI rationale
The server automatically reads a Codex identity token and sends it to agnoclast.com during startup when a confidential seat is found. This is credential disclosure to the package service without a startup consent prompt, so the package is malicious.
Evidence
lib/server.mjslib/confidential_session.mjslib/diagnose.mjs~/.codex/auth.json
Network endpoints1
agnoclast.com
Decision evidence
public snapshotAI called this Malicious at 96.0% confidence as Malware with low false-positive risk.
Evidence for block
- On MCP server startup, if the initial seat lookup finds confidential brains, the server gathers agent proof and sends it in a second lookup.
- For Codex, gathering proof reads the id_token from ~/.codex/auth.json.
- The confidential-brain lookup sends the proof in a POST request body.
- The package’s default service host is agnoclast.com.
Evidence against
- The proof lookup is tied to the package’s confidential-brain account feature, and is conditional on the first lookup finding a seat.
- Antigravity’s launch agent is only generated by its explicit install wiring; the package says it does not load the agent automatically.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
HighEntropyStringsUrlStrings
Source & flagged code
6 flaggedlib/capture.mjsView file
1import { readFileSync, accessSync, constants, openSync, mkdirSync } from 'fs'
L2: import { spawn, execFileSync } from 'child_process'
L3: import { homedir } from 'os'
...
L21: if (!res.ok) return null
L22: const j = await res.json().catch(() => ({}))
L23: return Array.isArray(j.types) ? j.types : null
...
L35: try {
L36: if (resolve(String(cwd)) === homedir()) return 'general'
L37: } catch { /* unresolvable path — fall through to basename */ }
...
L45: //
L46: // Handles the four remote forms git emits: scp-like ssh (git@github.com:o/n.git), ssh://, https://,
L47: // git://. The HOST CHECK IS LOAD-BEARING, not cosmetic: this string becomes a clearance key, and
Low
Weak Crypto
Package source references weak cryptographic algorithms.
lib/capture.mjsView on unpkg · L1lib/editors/antigravity.mjsView file
4Trigger-reachable persistence chain: manifest.bin -> bin/cortex-mcp.mjs -> lib/install.mjs -> lib/editors/index.mjs -> lib/editors/antigravity.mjs
L4: // WatchPaths the trajectory store and runs a one-shot sync. wire() generates the two artifacts
L5: // (the sync.sh + the launchd plist) deterministically. It does NOT run `launchctl load` here
L6: // (an unverifiable system mutation) and it flags the PORTABILITY BLOCKER below.
...
L21: /** The launchd plist, home-substituted. Deterministic — golden-testable byte-for-byte. */
L22: export function renderAntigravityPlist({ home = homedir() } = {}) {
L23: const sh = join(home, '.cortex', 'antigravity-sync.sh')
...
L33: <array>
L34: <string>/bin/bash</string>
L35: <string>${sh}</string>
Findings
4 High3 Medium5 Low
HighTrigger Reachable External Ai Agent Control Surface Mutationlib/channel.mjs
HighTrigger Reachable Persistencelib/editors/antigravity.mjs
HighSemantic Analysis Limitedbin/cortex-mcp.mjs#virtual:normalized:round1
HighPrevious Version Dangerous Deltalib/confidential_session.mjs
MediumNetwork
MediumEnvironment Vars
MediumInstall Persistencelib/editors/antigravity.mjs
LowScripts Present
LowWeak Cryptolib/capture.mjs
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to @theronap/cortex-mcp@0.9.276.
See all versions of @theronap/cortex-mcp for other recorded verdicts.
- Avoid installing @theronap/cortex-mcp@0.9.276. Remove it from direct dependencies and check your lockfile for transitive copies.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
- If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.
Evidence last updated: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.