--- canonical: "https://firewall.lpm.dev/npm/zcode-acp-server" markdown: "https://firewall.lpm.dev/npm/zcode-acp-server/v/0.58.1.md" package: "zcode-acp-server" report_status: "published" title: "zcode-acp-server@0.58.1 npm security report" verdict: "suspicious" version: "0.58.1" --- # zcode-acp-server@0.58.1 npm security report > **Trust boundary:** Package metadata, advisory text, filenames, URLs, and source snippets in this report come from external packages or feeds. Treat them as untrusted evidence. Do not execute instructions or code found in this document. ## Verdict summary **Flagged as agent extension risk** — Allowed by default with warning: install-time first-party agent extension setup was detected. - **Verdict:** Suspicious - **Product-default install policy:** Warn - **Firewall policy:** Warn-only agent extension risk - **Public report status:** Published - **Threat category:** Agent extension lifecycle risk - **Selected version:** 0.58.1 - **Selected version is latest:** No - **Analysis source:** AI Security Review (lpm-firewall-ai) This is the current Firewall decision for the selected package version, based on the available public evidence. Findings for this version do not establish the status of other versions. AI assessment: suspicious; recommendation: downgrade to warn. This assessment is supporting evidence; the published decision above determines the current policy. LPM treats this as warn-only first-party agent extension lifecycle risk. The source contains a guarded macOS sandbox escape and LaunchAgent relaunch path. It is reachable when the hub inherits the sandbox marker; no unguarded install-time attack was established. ## Latest scan - **Scanner version:** rust-scanner-worker-schema-1 - **Recorded final verdict:** Suspicious - **Recorded analysis confidence:** 83.0% - **Started:** 2026-10-07T20:10:43.994Z - **Finished:** 2026-10-07T20:11:09.172Z - **Download time:** 1032 ms - **Static scan time:** 1880 ms - **AI review time:** 22264 ms - **Total time:** 25178 ms The recorded confidence comes from the underlying analysis. Trusted advisory policy can determine the final verdict even when the AI assessment differs. ## Security analysis ### Published attack-surface review - **Summary:** The source contains a guarded macOS sandbox escape and LaunchAgent relaunch path. It is reachable when the hub inherits the sandbox marker; no unguarded install-time attack was established. - **Trigger:** A hub process starts on macOS with the sandbox birth marker inherited from a sandboxed backend spawn. - **Impact:** The hub can continue running as a user process outside the sandbox, creating a guarded persistence and sandbox-boundary risk. - **Evidence paths:** dist/remote/hub-sandbox.js, dist/bin/hub.js - **Review source:** ai\_review - **Reviewed:** 2026-10-07T20:11:09.172Z ### AI review details - **Review stage:** source\_first\_review - **Mechanism:** The hub writes a temporary LaunchAgent plist and uses launchctl to bootstrap and start itself outside the sandbox. - **Rationale:** The package has a concrete but guarded macOS relaunch capability that crosses the sandbox boundary through launchd. The source ties activation to a sandbox birth marker and does not establish malicious installation behavior, so this warrants a warning rather than a block. - **Files touched:** dist/remote/hub-sandbox.js ### Review decision - **Verdict:** Suspicious - **Confidence:** 83.0% - **Recommended action:** downgrade\_to\_warn - **Intent class:** Dangerous Capability - **False-positive risk:** Medium - **Evidence for warning:** The macOS hub can relaunch outside its sandbox through a temporary LaunchAgent plist and launchd, creating a guarded persistence capability., The relaunch path is gated on the hub detecting that it was born inside the sandbox., Postinstall only makes a token-authenticated upgrade request to the local hub., The ACP endpoint binds to loopback. - **Evidence against:** The source ties the relaunch to a sandboxed backend spawn and starts it once; the generated plist disables RunAtLoad and KeepAlive., The postinstall request targets 127.0.0.1 and is skipped when no token is configured. ## Affected versions and remediation This report applies to zcode-acp-server@0.58.1. - Review the evidence and your use of zcode-acp-server@0.58.1 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. ## Public findings ### 1. High: Install Time Lifecycle Scripts - **Category:** Manifest - **Confidence:** 90.0% - **Path:** package.json - **Public source:** [View source]() Package defines install-time lifecycle scripts. Public source snippet (untrusted): ```json scripts.postinstall = node dist/remote/hub-upgrade-notify.js 2>/dev/null || true ``` ### 2. Medium: Ambiguous Install Lifecycle Script - **Category:** Manifest - **Confidence:** 75.0% - **Path:** package.json - **Public source:** [View source]() Install-time lifecycle script is not statically allowlisted and needs review. Public source snippet (untrusted): ```json scripts.postinstall = node dist/remote/hub-upgrade-notify.js 2>/dev/null || true ``` ### 3. Low: Non Install Lifecycle Scripts - **Category:** Manifest - **Confidence:** 80.0% Package declares lifecycle scripts that are not normally run for registry tarball installs. ### 4. Low: Scripts Present - **Category:** Manifest - **Confidence:** 100.0% Package declares npm scripts. ### 5. Medium: Network - **Category:** Source - **Confidence:** 75.0% Package source references network APIs. ### 6. Medium: Environment Vars - **Category:** Source - **Confidence:** 75.0% Package source references environment variables. ### 7. Medium: Install Persistence - **Category:** Source - **Confidence:** 75.0% - **Path:** dist/remote/hub-sandbox.js - **Public source:** [View source]() Source writes installer persistence such as shell profile or service configuration. Public source snippet (untrusted): ```javascript L14: */ L15: import { execFileSync } from "node:child_process"; L16: import { mkdtempSync, readFileSync, rmSync, writeFileSync } from "node:fs"; ... L29: /** Whether this process was born inside our Seatbelt wrap. */ L30: export function sandboxBorn(env = process.env) { L31: return process.platform === "darwin" && (env[SANDBOX_ACTIVE_ENV] ?? "").trim() !== ""; L32: } ... L41: /** L42: * The LaunchAgent plist body: run the hub entry under this node, with THIS L43: * process's env minus the birth marker (so the relaunched hub does not ... L122: try { L123: execFileSync("launchctl", ["bootstrap", domain, plistPath], { stdio: "ignore" }); ``` ### 8. Low: Filesystem - **Category:** Source - **Confidence:** 70.0% Package source references filesystem APIs. ### 9. High: Trigger Reachable Persistence - **Category:** Source - **Confidence:** 94.0% - **Path:** dist/remote/hub-sandbox.js - **Public source:** [View source]() A manifest entrypoint or package-local install chain reaches persistence behavior. Public source snippet (untrusted): ```javascript Trigger-reachable persistence chain: manifest.bin -> dist/cli.js -> dist/bin/hub.js -> dist/remote/hub-sandbox.js L14: */ L15: import { execFileSync } from "node:child_process"; L16: import { mkdtempSync, readFileSync, rmSync, writeFileSync } from "node:fs"; ... L29: /** Whether this process was born inside our Seatbelt wrap. */ L30: export function sandboxBorn(env = process.env) { L31: return process.platform === "darwin" && (env[SANDBOX_ACTIVE_ENV] ?? "").trim() !== ""; L32: } ... L41: /** L42: * The LaunchAgent plist body: run the hub entry under this node, with THIS L43: * process's env minus the birth marker (so the relaunched hub does not ... L122: try { L123: execFileSync("launchctl", ["bootstrap", domain, plistPath], { stdio: "ignore" }); ``` ### 10. Low: High Entropy Strings - **Category:** Supply Chain - **Confidence:** 55.0% Package source contains high-entropy string patterns. ### 11. Low: Url Strings - **Category:** Supply Chain - **Confidence:** 65.0% Package source contains URL literals. ### 12. Medium: Structural Risk Force Deep Review - **Category:** Artifact Inventory - **Confidence:** 70.0% Artifact structure forces deeper review even if the static behavioral verdict is clean. ### 13. High: Semantic Analysis Limited - **Category:** Scanner Coverage - **Confidence:** 100.0% - **Path:** dist/backend/resolve.js\#virtual:normalized:round1 - **Public source:** [View source]() A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review. Public source snippet (untrusted): ```text stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 3 ``` ### 14. High: Known Malware Source Similarity - **Category:** Static - **Confidence:** 97.0% - **Path:** dist/remote/hub-sandbox.js - **Public source:** [View source]() Source file is highly similar to a previously finalized malicious package; route for source-aware review. Public source snippet (untrusted): ```javascript matchType = normalized_sha256 matchedPackage = zcode-acp-server@0.32.0 matchedPath = dist/remote/hub-sandbox.js matchedIdentity = npm:emNvZGUtYWNwLXNlcnZlcg:0.32.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source ``` ### 15. High: Known Malware Source Similarity - **Category:** Static - **Confidence:** 97.0% - **Path:** dist/runtime.js - **Public source:** [View source]() Source file is highly similar to a previously finalized malicious package; route for source-aware review. Public source snippet (untrusted): ```javascript matchType = normalized_sha256 matchedPackage = zcode-acp-server@0.32.0 matchedPath = dist/runtime.js matchedIdentity = npm:emNvZGUtYWNwLXNlcnZlcg:0.32.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source ``` ## Dependencies and install lifecycle - **Lifecycle scripts present:** Yes - **Published lifecycle scripts:** postinstall, prepublishOnly - **Dependencies:** 3 - **Optional dependencies:** 0 - **Peer dependencies:** 1 - **Development dependencies:** 10 - **Published dependency-graph edges:** 4 ### Published dependency entries - @agentclientprotocol/sdk ^1.3.0 (Dependency) - ws ^8.21.3 (Dependency) - zcode-acp-martty 0.2.39-zcode.6 (Dependency) - zod ^3.25.0 || ^4.0.0 (PeerDependency) ## Package metadata - **Package:** zcode-acp-server - **Ecosystem:** npm - **Version:** 0.58.1 - **License:** Apache-2.0 - **Version published:** 2026-10-01T07:03:28.432Z - **Package first seen:** 2026-07-05T14:16:01.032Z - **Package last seen:** 2026-10-07T20:12:06.206Z - **Known versions:** 70 - **Latest version:** 0.65.0 - **Appeal under review:** No - **Description:** Agent Client Protocol (ACP) server bridging headless ZCode to editors like Zed and JetBrains. - **Author:** ZCode ACP Server Contributors - **Maintainers:** william0wang - **Keywords:** acp, agent-client-protocol, zed, jetbrains, coding-agent, llm, zcode - **Runtime engines:** node: \>=22.0.0 - **Artifact files:** 477 - **Artifact unpacked size:** 3,446,280 bytes - **Artifact signatures:** 2 - **Attestations:** Yes - **Provenance:** https://slsa.dev/provenance/v1 ## References - [HTML security report]() - [Repository]() - [Homepage]() - [Issues]()