postboi@0.37.0
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AI Security Review
scanned 2mo ago · by lpm-firewall-aiStatic source inspection found no covert harvesting, arbitrary command execution, remote payload loading, or install-time persistence. Scanner findings map to disclosed, user-invoked messaging setup and same-service credential synchronization.
Static reason
High-risk behavior combination matched malicious policy.
Trigger
Explicit execution of postboi CLI commands such as init, env, sync, or skill.
Impact
The CLI can store user-entered provider credentials in project env files and synchronize them to the Postboi account when the user has authenticated.
Mechanism
Interactive messaging-provider setup and optional credential synchronization.
AI rationale
Static source inspection found no covert harvesting, arbitrary command execution, remote payload loading, or install-time persistence. Scanner findings map to disclosed, user-invoked messaging setup and same-service credential synchronization.
Evidence
package.jsondist/cli.jsdist/workers_env.jsskills/postboi/SKILL.md.env.env.local.envrc.dev.vars.gitignore.claude/skills/postboi/SKILL.md
Network endpoints1
postboi.app
Decision evidence
public snapshotAI called this Clean at 91.0% confidence as Benign with medium false-positive risk.
Evidence for AI clean decision
Evidence against
- package.json has only a prepare hook running SvelteKit sync; no install/postinstall hook.
- CLI execution is gated by explicit subcommands such as init, env, sync, and skill.
- Credential upload targets the package's own Postboi service and requires an existing POSTBOI_TOKEN.
- Provider secrets are collected interactively during explicit CLI setup and written to selected project env files.
- The .claude skill write is an explicit CLI action or an init confirmation, not install-time mutation.
- Dynamic Cloudflare import is runtime-guarded for Cloudflare Workers bindings.
Behavioral surface
ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetworkShell
HighEntropyStringsMinifiedUrlStrings
Source & flagged code
6 flaggeddist/cli.jsView file
108const { pathToFileURL } = await import("node:url");
L109: let dir = process.cwd();
L110: for (;; ) {
...
L245: if (this.#hooks.before?.send) {
L246: return this.#hooks.before.send({
L247: provider: this.provider,
...
L294: async send_request(url, init) {
L295: return fetch(url, init);
L296: }
...
L358: async read_json(response) {
L359: const text = await response.text();
L360: if (!text)
Critical
Credential Exfiltration
Source appears to send environment or credential material to an external endpoint.
dist/cli.jsView on unpkg · L108108const { pathToFileURL } = await import("node:url");
L109: let dir = process.cwd();
L110: for (;; ) {
...
L245: if (this.#hooks.before?.send) {
L246: return this.#hooks.before.send({
L247: provider: this.provider,
...
L294: async send_request(url, init) {
L295: return fetch(url, init);
L296: }
...
L358: async read_json(response) {
L359: const text = await response.text();
L360: if (!text)
Critical
Browser Credential Phishing
Source appears to collect browser login credentials for exfiltration.
dist/cli.jsView on unpkg · L108788} from "node:fs";
L789: import { spawnSync } from "node:child_process";
L790: import { join as join5, delimiter, dirname as dirname3 } from "node:path";
High
Findings
2 Critical3 High4 Medium5 Low
CriticalCredential Exfiltrationdist/cli.js
CriticalBrowser Credential Phishingdist/cli.js
HighChild Processdist/cli.js
HighShelldist/cli.js
HighCommand Output Exfiltrationdist/cli.js
MediumDynamic Requiredist/workers_env.js
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowNon Install Lifecycle Scripts
LowScripts Present
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to postboi@0.37.0.
See all versions of postboi for other recorded verdicts.
- Review the evidence and your use of postboi@0.37.0 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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