registry / oh-my-opencode / 5.1.34
oh-my-opencode@5.1.34
⚠ Under reviewThe Best AI Agent Harness - Batteries-Included OpenCode Plugin with Multi-Model Orchestration, Parallel Background Agents, and Crafted LSP/AST Tools
AI Security Review
scanned 20d ago · by lpm-firewall-aiThe postinstall cache cleanup is scoped to matching OpenCode plugin cache entries, and the dynamic Function call compiles generated validator code. The runtime binary download path remains incompletely resolved, so the source supports manual review rather than a confirmed attack verdict.
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
When runtime requests the comment-checker binary path and no cached binary is available.
Impact
The binary becomes part of runtime behavior; this inspection did not establish its integrity checks or fully trace all activation paths.
Mechanism
The package fetches a versioned platform archive from a GitHub release and passes the resulting binary path to the checker.
AI rationale
The postinstall cache cleanup is scoped to matching OpenCode plugin cache entries, and the dynamic Function call compiles generated validator code. The runtime binary download path remains incompletely resolved, so the source supports manual review rather than a confirmed attack verdict.
Evidence
dist/index.js
Network endpoints1
github.com
Decision evidence
public snapshotAI called this Manual Review at 65.0% confidence as Unknown with medium false-positive risk.
AI review observations
- The manifest runs postinstall.mjs; that hook removes cache directories whose names match the package’s OpenCode plugin prefixes.
- The dynamic Function call compiles validator code assembled from generated schema code.
- The runtime lazily downloads a versioned platform comment-checker release from GitHub and passes the binary path to the checker. The inspected excerpts do not establish artifact integrity or fully trace every activation path.
Evidence against
Behavioral surface
ChildProcessCryptoDynamicRequireEnvironmentVarsEvalFilesystemNetworkShell
HighEntropyStringsMinifiedTelemetryUrlStrings
GitDependency
Source & flagged code
25 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
6 Critical14 High9 Medium6 Low
CriticalSame File Env Network Executiondist/skills/browser/runtime/omowright/index.js
CriticalDownload Executedist/skills/browser/runtime/omowright/index.js
CriticalEncrypted Payload Temp Executiondist/cli-node/index.js
CriticalRemote Response Code Executiondist/index.js
CriticalAi Agent Control Hijackpackage.json
CriticalPrevious Version Dangerous Deltadist/cli-node/index.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
Affected versions and remediation
This report applies to oh-my-opencode@5.1.34.
See all versions of oh-my-opencode for other recorded verdicts.
- Review the evidence and your use of oh-my-opencode@5.1.34 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.