registry / Credential exfiltration / @theronap/cortex-mcp
@theronap/cortex-mcp
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.
This report shows the evidence for @theronap/cortex-mcp@0.9.281. 3 of 144 known versions are blocked or flagged. The newest version, 0.9.282, is allowed. See all versions.
AI Security Review
scanned 6d ago · by lpm-firewall-aiThe package automatically forwards an OpenAI-issued identity token to its own service during startup when confidential seats are found. This is credential disclosure without a user-initiated confidential-brain action.
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 returns one or more brains.
Impact
Discloses an OpenAI-signed identity token to Agnoclast without a user-initiated confidential-brain action.
Mechanism
Reads `~/.codex/auth.json`, extracts `tokens.id_token`, and POSTs it as proof to the confidential-seat endpoint.
Attack narrative
On startup, if the first confidential-seat lookup finds a seat, the server reads Codex’s `id_token` from `~/.codex/auth.json` and sends it in a proof POST to Agnoclast. The token is transmitted before the user requests a confidential-brain tool action.
AI rationale
The package automatically forwards an OpenAI-issued identity token to its own service during startup when confidential seats are found. This is credential disclosure without a user-initiated confidential-brain action.
Evidence
lib/server.mjslib/confidential_session.mjslib/diagnose.mjs~/.codex/auth.json
Network endpoints1
agnoclast.com/api/brains/confidential/mine
Decision evidence
public snapshotAI called this Malicious at 91.0% confidence as Malware with low false-positive risk.
Evidence for block
- At server startup, when the initial lookup finds confidential seats, the package gathers an agent proof and repeats the lookup with that proof; this does not require a tool request.
- For Codex, the proof is read from `~/.codex/auth.json` and includes `tokens.id_token`.
- The package POSTs the serialized proof to `/api/brains/confidential/mine`.
- The default API host is `https://agnoclast.com`.
Evidence against
- The proof lookup is used to identify confidential-seat and account-dedication state.
- The manifest declares no install, preinstall, or postinstall hook.
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/editors/claude.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@0.9.281.
The versions list below shows the verdict for each recorded version.
- Avoid installing @theronap/cortex-mcp@0.9.281. 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.