registry / oh-my-opencode / 5.1.33
oh-my-opencode@5.1.33
The Best AI Agent Harness - Batteries-Included OpenCode Plugin with Multi-Model Orchestration, Parallel Background Agents, and Crafted LSP/AST Tools
AI Security Review
scanned 22d ago · by lpm-firewall-aiThe npm postinstall hook performs scoped cache cleanup, while the separate Codex extension update path is activated by an explicit command and refreshes package-owned plugin files and dependencies. This guarded extension setup warrants a warning; the inspected source does not establish malicious behavior.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review; previous stored version diff introduced dangerous source
Trigger
The launcher receives an explicit lazycodex or lazycodex-ai update command.
Impact
This can refresh the first-party Codex extension and its dependency tree; the inspected source does not establish unconsented configuration changes or credential exposure.
Mechanism
The update flow copies configured MCP runtime files into the plugin staging directory and runs npm install or ci before updating the plugin.
AI rationale
The npm postinstall hook performs scoped cache cleanup, while the separate Codex extension update path is activated by an explicit command and refreshes package-owned plugin files and dependencies. This guarded extension setup warrants a warning; the inspected source does not establish malicious behavior.
Evidence
bin/oh-my-opencode.jsdist/cli-node/index.js
Decision evidence
public snapshotAI called this Suspicious at 79.0% confidence as Dangerous Capability with medium false-positive risk.
Evidence for warning
- package.json declares a postinstall hook that runs postinstall.mjs.
- The hook removes matching OpenCode cache directories whose names begin with this package’s names.
- The launcher routes explicit lazycodex update and uninstall commands to the local Codex installer.
- Plugin refresh copies configured MCP runtimes and runs npm install or ci in a staging directory before updating the plugin.
- The LSP references to .codex paths occur in expectReject test cases.
Evidence against
- The inspected integration behavior is activated by a user-invoked update command; the inspected excerpts do not establish unconsented agent configuration changes or credential transfer.
Behavioral surface
ChildProcessCryptoDynamicRequireEnvironmentVarsEvalFilesystemNetworkShell
HighEntropyStringsMinifiedTelemetry
Source & flagged code
24 flaggedpackage.jsonView file
1Install-time code directly mutates a foreign AI-agent control surface:
L62: "docs/reference/web-terminal-visual-qa.md",
L63: ".opencode/command",
L64: ".opencode/skills",
L65: ".agents/command",
L66: ".agents/skills",
L67: "packages/lsp-tools-mcp/package.json",
...
L97: "packages/prompts-core/prompts/ultrawork/codex.md",
L98: "packages/omo-codex/plugin/.codex-plugin",
L99: "!packages/omo-codex/plugin/node_modules",
...
L147: "test:fast": "bun run script/test-fast.ts",
L148: "test:senpi": "bun run build:senpi-plugin && tsgo --noEmit -p packages/omo-senpi/tsconfig.json && bun test --timeout 20000 packages/omo-senpi && bun test ./.agents/skills/senpi-qa/...
L149: "test:windows-codex": "bun run test:codex",
Write operation from dist/tui.js:
L2183: // packages/utils/src/xdg-data-dir.ts
L2184: i
Critical
Ai Agent Control Hijack
Source creates an unconsented AI-agent control surface through install-time mutation or a default unauthenticated remote skill channel.
package.jsonView on unpkg · L1•scripts.postinstall = node postinstall.mjs
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkg•scripts.postinstall = node postinstall.mjs
Findings
5 Critical14 High9 Medium6 Low
CriticalSame File Env Network Executiondist/skills/browser/runtime/omowright/index.js
CriticalDownload Executedist/skills/browser/runtime/omowright/index.js
CriticalRemote Response Code Executiondist/index.js
CriticalAi Agent Control Hijackpackage.json
CriticalPrevious Version Dangerous Deltapackages/git-bash-mcp/dist/cli.js
HighInstall Time Lifecycle Scriptspackage.json
HighChild Processbin/oh-my-opencode.js
HighShelldist/cli-node/index.js
HighEvaldist/skills/ulw-research/scripts/layout-probe.test.ts
HighCredential Redirect Persistencedist/index.js
HighCommand Output Exfiltrationdist/cli-node/index.js
Affected versions and remediation
This report applies to oh-my-opencode@5.1.33.
See all versions of oh-my-opencode for other recorded verdicts.
- Review the evidence and your use of oh-my-opencode@5.1.33 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: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.