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superoc@0.1.19: AI-agent control-surface risk | LPM Firewall

registry / superoc / 0.1.19

superoc@0.1.19

Multi-provider API key & OAuth account rotator plugin for OpenCode — NVIDIA NIM, Google Gemini & Google Cloud Code Antigravity

AI Security Review

scanned 3h ago · by lpm-firewall-ai

LPM flags this version as an AI-agent control-surface risk. Installing the package automatically modifies the user's OpenCode control configuration. It registers superoc and installs an Antigravity provider without an explicit setup command.

Static reason

High-risk behavior combination matched malicious policy.

Trigger

npm postinstall during package installation

Impact

The package can cause OpenCode to load this plugin and route provider configuration through its runtime code.

Mechanism

automatic OpenCode configuration mutation and plugin registration

Policy narrative

On npm installation, postinstall runs automatically and edits the user's OpenCode configuration. It inserts the superoc plugin and overwrites the Antigravity provider configuration. The script also attempts to add an older superoc release as an OpenCode dependency and create a plugin auto-discovery file; this block is currently suppressed after undefined identifier errors. Runtime OAuth code then handles bearer tokens for Google endpoints. The unconsented install-time mutation of a foreign AI-agent configuration is sufficient to block publication.

Rationale

This release has a concrete, unconsented postinstall path that mutates a broad OpenCode AI-agent control surface and causes the package to be loaded. The package-aligned Google endpoints do not offset that automatic control-surface modification.

Evidence

package.jsonscripts/postinstall.js$XDG_CONFIG_HOME/opencode/opencode.jsonc$XDG_CONFIG_HOME/opencode/opencode.json$XDG_CONFIG_HOME/opencode/package.json$XDG_CONFIG_HOME/opencode/plugins/superoc.js

Source & flagged code

5 flagged · loading source

package.jsonView file

•scripts.postinstall = node scripts/postinstall.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node scripts/postinstall.js

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

dist/antigravity.jsView file

1import crypto from "crypto"; L2: import http from "http"; L3: import { spawn } from "child_process"; L4: export function openUrlInBrowser(url) { L5: try { L6: if (process.platform === "win32") { L7: spawn("rundll32.exe", ["url.dll,FileProtocolHandler", url], { ... L22: } L23: const charArrToString = (codes) => String.fromCharCode(...codes); L24: export const ANTIGRAVITY_CLIENT_ID = charArrToString([ ... L107: headers, L108: body: JSON.stringify({

High

Sandbox Evasion Gated Capability

Source gates dangerous network, credential, or execution behavior behind CI, host, platform, time, or geo fingerprint checks.

dist/antigravity.jsView on unpkg · L1

scripts/postinstall.jsView file

9const CONFIG_DIR = join(xdgConfig, "opencode"); L10: const jsoncPath = join(CONFIG_DIR, "opencode.jsonc"); L11: const jsonPath = join(CONFIG_DIR, "opencode.json"); L12: const CONFIG_PATH = existsSync(jsoncPath) ? jsoncPath : jsonPath; ... L120: try { L121: await mkdir(CONFIG_DIR, { recursive: true, mode: 0o700 }); L122: } catch (err) { ... L186: opencodePkg.dependencies.superoc = "^0.1.18"; L187: fs.writeFileSync(opencodePkgPath, JSON.stringify(opencodePkg, null, 2) + "\n"); L188: ... L192: const targetDist = path.join(targetModuleDir, "dist"); L193: fs.mkdirSync(targetDist, { recursive: true });

Critical

Ai Agent Control Hijack

Source creates an unconsented AI-agent control surface through install-time mutation or a default unauthenticated remote skill channel.

scripts/postinstall.jsView on unpkg · L9

dist/antigravity.js#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 2

High

Semantic Analysis Limited

A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.

dist/antigravity.js#virtual:normalized:round1View on unpkg