registry / @plannotator/opencode / 0.27.10
@plannotator/opencode@0.27.10
Plannotator plugin for OpenCode - interactive plan review with visual annotation
AI Security Review
scanned 2mo ago · by lpm-firewall-aiThe package automatically mutates an AI-agent control surface and installs prompts that initiate executable actions. This matches a first-party agent-extension lifecycle risk rather than concrete malware under the stated policy.
Static reason
One or more suspicious static signals were detected.; previous stored version diff introduced dangerous source
Trigger
npm postinstall, followed by an OpenCode Plannotator slash-command or plugin action.
Impact
Adds an agent-facing execution path without an explicit setup command; no confirmed data theft or remote code execution was found.
Mechanism
Automatic OpenCode extension installation and CLI invocation.
AI rationale
The package automatically mutates an AI-agent control surface and installs prompts that initiate executable actions. This matches a first-party agent-extension lifecycle risk rather than concrete malware under the stated policy.
Evidence
package.jsoncommands/plannotator-review.mddist/server.jscommands/*.mdskills/plannotator/SKILL.md${XDG_CONFIG_HOME:-$HOME/.config}/opencode/commands/${XDG_CONFIG_HOME:-$HOME/.config}/opencode/skills/plannotator/
Decision evidence
public snapshotAI called this Suspicious at 91.0% confidence as Dangerous Capability with low false-positive risk.
Evidence for warning
- The automatic postinstall hook writes command and skill files into the user's OpenCode configuration.
- Installed command files instruct the agent to run the plannotator executable without asking the user.
- The runtime can launch the configured plannotator executable for plugin actions.
Evidence against
- The postinstall writes only package-named OpenCode command and skill locations, not broad project files.
- The reviewed child-process launch uses argument arrays with shell disabled.
- No source evidence showed credential harvesting, secret exfiltration, self-dependency, or remote payload execution.
Behavioral surface
ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetworkShellWebSocket
HighEntropyStringsUrlStrings
Source & flagged code
5 flaggedpackage.jsonView file
•scripts.postinstall = mkdir -p ${XDG_CONFIG_HOME:-$HOME/.config}/opencode/commands && cp ./commands/*.md ${XDG_CONFIG_HOME:-$HOME/.config}/opencode/commands/ 2>/dev/null || true; mkdir -p ${XDG_CONFIG_H...
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkg•scripts.postinstall = mkdir -p ${XDG_CONFIG_HOME:-$HOME/.config}/opencode/commands && cp ./commands/*.md ${XDG_CONFIG_HOME:-$HOME/.config}/opencode/commands/ 2>/dev/null || true; mkdir -p ${XDG_CONFIG_H...
Medium
Ambiguous Install Lifecycle Script
Install-time lifecycle script is not statically allowlisted and needs review.
package.jsonView on unpkgdist/server.jsView file
•matchType = previous_version_dangerous_delta
matchedPackage = @plannotator/opencode@0.27.7
matchedIdentity = npm:QHBsYW5ub3RhdG9yL29wZW5jb2Rl:0.27.7
similarity = 0.500
summary = stored previous version shares package body but lacks this dangerous source file
Findings
2 High6 Medium5 Low
HighInstall Time Lifecycle Scriptspackage.json
HighPrevious Version Dangerous Deltadist/server.js
MediumAmbiguous Install Lifecycle Scriptpackage.json
MediumDynamic Requiredist/server.js
MediumNetwork
MediumEnvironment Vars
MediumOversized Source Filedist/embedded.js
MediumStructural Risk Force Deep Review
LowNon Install Lifecycle Scripts
LowScripts Present
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to @plannotator/opencode@0.27.10.
See all versions of @plannotator/opencode for other recorded verdicts.
- Review the evidence and your use of @plannotator/opencode@0.27.10 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.