@mutmutco/codex-plugin@4.5.127
MMI workflow skills and org gates delivery.
AI Security Review
scanned 4d ago · by lpm-firewall-aiThe CLI conditionally forwards an existing GitHub token to an unrestricted MMI_HUB_URL override, creating a real credential-exposure risk. Because the exchange requires a user-run Hub operation and the endpoint override is configurable, the evidence supports a warning rather than a publish block.
Static reason
High-risk behavior combination matched malicious policy.; previous stored version diff introduced dangerous source
Trigger
A user runs a Hub-backed command while MMI_HUB_URL points to a custom endpoint and a Hub session is needed.
Impact
A custom endpoint can receive the GitHub token; the source does not show how a recipient would use it.
Mechanism
The CLI obtains a GitHub token from the environment or `gh auth token`, then sends it as a bearer credential to the configured endpoint’s `/auth/session` route.
AI rationale
The CLI conditionally forwards an existing GitHub token to an unrestricted MMI_HUB_URL override, creating a real credential-exposure risk. Because the exchange requires a user-run Hub operation and the endpoint override is configurable, the evidence supports a warning rather than a publish block.
Evidence
cli/dist/main.cjs
Network endpoints1
tqxxwzftic.execute-api.eu-central-1.amazonaws.com
Decision evidence
public snapshotAI called this Suspicious at 91.0% confidence as Dangerous Capability with medium false-positive risk.
Evidence for warning
- package.json has no lifecycle scripts; the CLI is included as a package file.
- MMI_HUB_URL can replace the CLI’s default Hub URL.
- The CLI reads GitHub credentials from environment variables or `gh auth token`.
- When it needs a Hub session, it sends that token as a bearer credential to the configured URL’s `/auth/session` endpoint.
- The `whoami` command invokes this session exchange when run.
- The flagged agent-config path match is used to exclude untracked agent config paths from a check, not to modify those files.
Evidence against
Behavioral surface
ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetwork
HighEntropyStringsUrlStrings
NoLicense
Source & flagged code
7 flagged · loading sourcecli/dist/main.cjsView file
39function globalDispatcher() {
L40: return globalThis[UNDICI_GLOBAL_DISPATCHER_SYMBOL];
L41: }
...
L80: try {
L81: stream.write("", () => resolve8());
L82: } catch {
...
L88: await Promise.race([
L89: Promise.all([flushStream(process.stdout), flushStream(process.stderr)]),
L90: new Promise((resolve8) => {
...
L140: CLI_EXIT_WATCHDOG_MS = (() => {
L141: const testOverride = Number(process.env.MMI_CLI_TEST_EXIT_WATCHDOG_MS);
L142: return process.env.NODE_ENV === "test" && Number.isFinite(testOverride) && testOverride >= 25 ? testOverride : 1e4;
Critical
Credential Exfiltration
Source appears to send environment or credential material to an external endpoint.
cli/dist/main.cjsView on unpkg · L39•matchType = previous_version_dangerous_delta
matchedPackage = @mutmutco/codex-plugin@4.5.84
matchedIdentity = npm:QG11dG11dGNvL2NvZGV4LXBsdWdpbg:4.5.84
similarity = 1.000
summary = stored previous version shares package body but lacks this dangerous source file
Critical
Previous Version Dangerous Delta
This package version adds a dangerous source file absent from the previous stored version; route for source-aware review.
cli/dist/main.cjsView on unpkg1115if (process.platform === "win32") {
L1116: (0, import_node_child_process2.execFileSync)("taskkill", ["/PID", String(pid), "/T", "/F"], { stdio: "ignore", windowsHide: true });
L1117: } else {
Findings
2 Critical3 High5 Medium4 Low
CriticalCredential Exfiltrationcli/dist/main.cjs
CriticalPrevious Version Dangerous Deltacli/dist/main.cjs
HighChild Processcli/dist/main.cjs
HighCommand Output Exfiltrationcli/dist/main.cjs
HighSemantic Analysis Limitedcli/dist/main.cjs
MediumDynamic Requirecli/dist/index.cjs
MediumNetwork
MediumEnvironment Vars
MediumShips Build Helperbin/mmi-cli.cmd
MediumStructural Risk Force Deep Review
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
LowNo License
Affected versions and remediation
This report applies to @mutmutco/codex-plugin@4.5.127.
See all versions of @mutmutco/codex-plugin for other recorded verdicts.
- Review the evidence and your use of @mutmutco/codex-plugin@4.5.127 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: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.