registry / superoc / 0.1.26

superoc@0.1.26

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

AI Security Review

scanned 27d ago · by lpm-firewall-ai

This is a first-party OpenCode plugin whose postinstall still changes agent permissions and a user environment variable without a separate opt-in. That is guarded extension lifecycle risk, not a foreign-agent hijack or a hidden exfiltration chain.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review

Trigger

npm postinstall, and later import of dist/index.js by OpenCode.

Impact

OpenCode loads superoc and may gain web search plus the EXA feature without an explicit setup command. Credentials are not sent to an unrelated host by this path.

Mechanism

postinstall rewrites OpenCode config, plugin shim, local package copy, and a placeholder auth entry, and on Windows sets a user environment variable. The plugin module also forces OPENCODE_ENABLE_EXA.

AI rationale

Evidence

package.jsonscripts/postinstall.jsdist/index.jsdist/antigravity.js~/.config/opencode/opencode.json~/.config/opencode/opencode.jsonc~/.config/opencode/package.json~/.config/opencode/plugins/superoc.js~/.config/opencode/node_modules/superoc~/.local/share/opencode/auth.json

Network endpoints1

127.0.0.1:51121/v1beta

Decision evidence

public snapshot

AI called this Suspicious at 78.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

npm postinstall runs scripts/postinstall.js automatically.
That script registers superoc in the OpenCode plugin lists and sets permission.websearch to allow when unset.
It also writes a superoc dependency into the OpenCode config package.json and copies this package into that config's node_modules.
On Windows the same install sets the user environment variable OPENCODE_ENABLE_EXA through powershell.
Loading dist/index.js sets OPENCODE_ENABLE_EXA when it is not already set.
Antigravity OAuth and the local proxy target Google and localhost, matching the stated rotator.

Evidence against

Published package.json does not depend on superoc, so there is no nested lifecycle self-install.
Network calls stay on Google, NVIDIA, and 127.0.0.1 rather than an unrelated recipient.
No eval, remote payload fetch, or secret upload was found.
Writes stay inside OpenCode config and data directories for this plugin.

Behavioral surface

Source

ChildProcessCryptoEnvironmentVars

Source & flagged code

7 flagged

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

scripts/postinstall.jsView file

Lines 1-32javascript

1#!/usr/bin/env node

3import path, { join, dirname } from "path";

4import os, { homedir } from "os";

5import fs, { existsSync } from "fs";

6import { readFile, writeFile, mkdir } from "fs/promises";

7import { fileURLToPath } from "url";

9const __dirname = dirname(fileURLToPath(import.meta.url));

11const xdgConfig = process.env.XDG_CONFIG_HOME || join(homedir(), ".config");

12const CONFIG_DIR = join(xdgConfig, "opencode");

High

Entrypoint Build Divergence

Manifest entrypoint contains risky behavior absent from dist/build output.

scripts/postinstall.jsView on unpkg · L8

13const jsoncPath = join(CONFIG_DIR, "opencode.jsonc");

14const jsonPath = join(CONFIG_DIR, "opencode.json");

15const CONFIG_PATH = existsSync(jsoncPath) ? jsoncPath : jsonPath;

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 · L12

17const DEFAULT_MODALITIES = {

18 input: ["text", "image", "pdf"],

19 output: ["text"],

20};

22const DEFAULT_CAPABILITIES = {

23 tools: true,

24 input: ["text", "image", "pdf"],

25 output: ["text"],

26};

28const BASE_ANTIGRAVITY_MODELS = {

29 "gemini-3.8-flash": {

30 name: "Gemini 3.8 Flash",

31 limit: { context: 1048576, output: 65536 },

32 capabilities: DEFAULT_CAPABILITIES,

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

•matchType = normalized_sha256 matchedPackage = superoc@0.1.21 matchedPath = dist/antigravity.js matchedIdentity = npm:c3VwZXJvYw:0.1.21 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

dist/antigravity.jsView on unpkg

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

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 1

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

Source & flagged code

7 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

scripts/postinstall.jsView file

12const CONFIG_DIR = join(xdgConfig, "opencode"); L13: const jsoncPath = join(CONFIG_DIR, "opencode.jsonc"); L14: const jsonPath = join(CONFIG_DIR, "opencode.json"); L15: const CONFIG_PATH = existsSync(jsoncPath) ? jsoncPath : jsonPath; ... L146: try { L147: await mkdir(CONFIG_DIR, { recursive: true, mode: 0o700 }); L148: } catch (err) { ... L256: const targetDist = join(targetModuleDir, "dist"); L257: await mkdir(targetDist, { recursive: true }); L258: fs.cpSync(localDist, targetDist, { recursive: true }); L259: } ... L261: if (existsSync(localPkg)) {

Findings

1 Critical5 High4 Medium5 Low

CriticalAi Agent Control Hijackscripts/postinstall.js

HighInstall Time Lifecycle Scriptspackage.json

HighEntrypoint Build Divergencescripts/postinstall.js

HighSandbox Evasion Gated Capabilitydist/antigravity.js

HighSemantic Analysis Limiteddist/antigravity.js#virtual:normalized:round1

HighKnown Malware Source Similaritydist/antigravity.js

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumNetwork

MediumEnvironment Vars

MediumStructural Risk Force Deep Review

LowNon Install Lifecycle Scripts

LowScripts Present

LowFilesystem

Affected versions and remediation

This report applies to superoc@0.1.26.

See all versions of superoc for other recorded verdicts.

Review the evidence and your use of superoc@0.1.26 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: 2026-09-26 11:22:12.909Z (UTC).

Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Runtime surface

Behavioral surface

Source & flagged code