registry / @plannotator/opencode / 0.27.4
@plannotator/opencode@0.27.4
Plannotator plugin for OpenCode - interactive plan review with visual annotation
AI Security Review
scanned 3mo ago · by lpm-firewall-aiThe package has an unconsented postinstall mutation of an OpenCode control surface, warranting a warning under the lifecycle policy. The mutation is narrowly scoped to its own command definitions and no concrete malicious chain was found.
Static reason
One or more suspicious static signals were detected.; previous stored version diff introduced dangerous source
Trigger
npm postinstall; later OpenCode plugin use
Impact
Unconsented per-user AI-agent command-surface mutation.
Mechanism
OpenCode command installation and plugin prompt/tool extension
AI rationale
The package has an unconsented postinstall mutation of an OpenCode control surface, warranting a warning under the lifecycle policy. The mutation is narrowly scoped to its own command definitions and no concrete malicious chain was found.
Evidence
package.jsondist/server.jscommands/plannotator-annotate.mdcommands/plannotator-last.mdcommands/plannotator-review.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 unconditionally creates the per-user OpenCode commands directory and copies package command files.
- The runtime registers a submit_plan tool and modifies OpenCode planning prompts.
Evidence against
- The install hook only copies this package's markdown command definitions; it does not execute downloaded code.
- Runtime dynamic import is restricted to the packaged embedded.js path or local ./embedded fallback.
- No credential harvesting, secret exfiltration, destructive filesystem sweep, or remote payload execution 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@0.27.3
matchedIdentity = npm:QHBsYW5ub3RhdG9yL29wZW5jb2Rl:0.27.3
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@0.27.4.
See all versions of @plannotator/opencode for other recorded verdicts.
- Review the evidence and your use of @plannotator/opencode@0.27.4 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: .
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