postboi@0.36.0
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AI Security Review
scanned 2mo ago · by lpm-firewall-aiThe flagged primitives implement explicit CLI setup and authenticated credential sharing, not install-time or covert collection. The prepare hook is a Svelte sync command and source shows no concrete malicious chain.
Static reason
High-risk behavior combination matched malicious policy.; previous stored version diff introduced dangerous source
Trigger
User runs postboi init, postboi env push, or postboi skill.
Impact
Selected provider credentials may be sent to the Postboi service as the documented team-sync feature.
Mechanism
Authenticated credential synchronization and optional project-local skill installation.
AI rationale
The flagged primitives implement explicit CLI setup and authenticated credential sharing, not install-time or covert collection. The prepare hook is a Svelte sync command and source shows no concrete malicious chain.
Evidence
package.jsondist/cli.jsdist/workers_env.jsskills/postboi/SKILL.md.claude/skills/postboi/SKILL.md.env.gitignore
Network endpoints1
postboi.app/v1/env
Decision evidence
public snapshotAI called this Clean at 94.0% confidence as Benign with low false-positive risk.
Evidence for AI clean decision
- CLI can upload supplied credential values to the authenticated Postboi API.
- CLI can install a bundled Claude skill under .claude/skills.
Evidence against
- package.json has only a prepare build-sync hook; no install/postinstall hook.
- Credential upload requires POSTBOI_TOKEN and explicit init/env command flow.
- Skill installation is an interactive confirmation or explicit skill command.
- No source evidence of covert collection, foreign-agent mutation at install, or unrelated exfiltration.
Behavioral surface
ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetworkShell
HighEntropyStringsMinifiedUrlStrings
Source & flagged code
7 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 · L108•matchType = previous_version_dangerous_delta
matchedPackage = postboi@0.35.0
matchedIdentity = npm:cG9zdGJvaQ:0.35.0
similarity = 0.974
summary = stored previous version shares package body but lacks this dangerous source file
Findings
3 Critical3 High4 Medium5 Low
CriticalCredential Exfiltrationdist/cli.js
CriticalBrowser Credential Phishingdist/cli.js
CriticalPrevious Version Dangerous Deltadist/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@0.36.0.
See all versions of postboi for other recorded verdicts.
- Review the evidence and your use of postboi@0.36.0 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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