registry / @plannotator/opencode / 0.27.3
@plannotator/opencode@0.27.3
Plannotator plugin for OpenCode - interactive plan review with visual annotation
AI Security Review
scanned 3mo ago · by lpm-firewall-aiNo concrete malicious chain was found. The package nevertheless uses postinstall to modify an AI-agent control surface, so it warrants a warning under the extension lifecycle policy.
Static reason
One or more suspicious static signals were detected.; previous stored version diff introduced dangerous source
Trigger
npm postinstall
Impact
Adds Plannotator slash-command definitions to the user OpenCode configuration.
Mechanism
copies packaged command definitions into OpenCode configuration
AI rationale
No concrete malicious chain was found. The package nevertheless uses postinstall to modify an AI-agent control surface, so it warrants a warning under the extension lifecycle policy.
Evidence
package.jsoncommands/plannotator-annotate.mdcommands/plannotator-last.mdcommands/plannotator-review.mddist/server.jscommands/*.md${XDG_CONFIG_HOME:-$HOME/.config}/opencode/commands/
Decision evidence
public snapshotAI called this Suspicious at 86.0% confidence as Dangerous Capability with low false-positive risk.
Evidence for warning
- postinstall creates the user OpenCode commands directory and copies package command files into it.
- Runtime can spawn the configured plannotator CLI, though only from the plugin’s review workflow.
Evidence against
- The install hook only copies three packaged Markdown command definitions; it does not fetch or execute a payload.
- CLI spawning uses shell:false and an explicit command/argument configuration.
- No credential harvesting, arbitrary remote payload loading, or destructive behavior was confirmed.
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
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
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@0.27.1
matchedIdentity = npm:QHBsYW5ub3RhdG9yL29wZW5jb2Rl:0.27.1
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@0.27.3.
See all versions of @plannotator/opencode for other recorded verdicts.
- Review the evidence and your use of @plannotator/opencode@0.27.3 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.