@theronap/cortex-mcp@0.9.256
Renamed to @theronap/agnoclast-mcp — use that. Existing installs switch themselves to the new name on next start.
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AI Security Review
scanned 13d ago · by lpm-firewall-aiThe default endpoint is package-aligned, but a custom CORTEX_URL can direct ordinary authenticated requests to another host. This conditional credential exposure warrants a warning; the inspected source does not establish a hidden default recipient or an install-time attack.
Static reason
No blocking static signals were detected.
Trigger
CORTEX_URL is set to a custom host and the MCP server starts.
Impact
The custom host operator can receive the Cortex token and gain access associated with that account.
Mechanism
The runtime resolves CORTEX_URL as its API base and attaches the existing token as a bearer authorization header on API requests.
AI rationale
The default endpoint is package-aligned, but a custom CORTEX_URL can direct ordinary authenticated requests to another host. This conditional credential exposure warrants a warning; the inspected source does not establish a hidden default recipient or an install-time attack.
Evidence
lib/server.mjslib/diagnose.mjs
Network endpoints1
agnoclast.com
Decision evidence
public snapshotAI called this Suspicious at 94.0% confidence as Dangerous Capability with medium false-positive risk.
Evidence for warning
- The normal MCP server reads a supplied Cortex token, resolves its API base from CORTEX_URL, and runs from the package entry point.
- The default API host is agnoclast.com, but the resolver accepts custom URLs except for a limited class of protected Vercel hosts.
- Normal API requests attach the existing bearer token to the selected base, with no destination-specific check in the request caller.
- The manifest declares no install lifecycle hook; setup and cross-editor wiring are exposed as explicit CLI commands.
- The agent integration locations write editor configuration through setup or install paths; these findings do not establish a separate attack.
Evidence against
- The default destination is the package-aligned Cortex host, and the credential exposure requires configuring a custom CORTEX_URL.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
HighEntropyStrings
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
3 High4 Medium5 Low
HighTrigger Reachable External Ai Agent Control Surface Mutationlib/uninstall.mjs
HighTrigger Reachable Persistencelib/editors/antigravity.mjs
HighSemantic Analysis Limitedbin/cortex-mcp.mjs#virtual:normalized:round1
MediumNetwork
MediumEnvironment Vars
MediumInstall Persistencelib/editors/antigravity.mjs
MediumAi Review Evidencelib/diagnose.mjs
LowScripts Present
LowWeak Cryptolib/capture.mjs
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to @theronap/cortex-mcp@0.9.256.
See all versions of @theronap/cortex-mcp for other recorded verdicts.
- Review the evidence and your use of @theronap/cortex-mcp@0.9.256 before allowing it. Restrict the permissions described in this report.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
Evidence last updated: .
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