registry / @plannotator/opencode / 0.26.8
@plannotator/opencode@0.26.8
Plannotator plugin for OpenCode - interactive plan review with visual annotation
AI Security Review
scanned 3mo ago · by lpm-firewall-aiSource inspection confirms an unprompted but package-scoped OpenCode command installation and agent-workflow integration. The behavior warrants a warning under the extension lifecycle policy, but 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; then OpenCode loading the configured plugin or a Plannotator review command/tool invocation.
Impact
Adds package-owned commands and modifies the host agent's plan-review workflow; no concrete malicious payload or exfiltration was established.
Mechanism
first-party OpenCode command installation and plugin lifecycle integration
AI rationale
Source inspection confirms an unprompted but package-scoped OpenCode command installation and agent-workflow integration. The behavior warrants a warning under the extension lifecycle policy, but no concrete malicious chain was found.
Evidence
package.jsondist/index.jsdist/server.jscommands/plannotator-annotate.mdcommands/plannotator-last.mdcommands/plannotator-review.mdREADME.md$XDG_CONFIG_HOME/opencode/commands$HOME/.config/opencode/commands$HOME/.plannotator/active/<project>/_active-plan.md
Decision evidence
public snapshotAI called this Suspicious at 90.0% confidence as Dangerous Capability with low false-positive risk.
Evidence for warning
- package.json postinstall creates $XDG_CONFIG_HOME/$HOME/.config/opencode/commands and copies package command files.
- dist/index.js registers OpenCode config, prompt, and tool-definition transforms.
- dist/server.js spawns the plannotator CLI only during review actions; PLANNOTATOR_BIN may override its path.
Evidence against
- The postinstall payload is three declarative Plannotator command markdown files, not executable code.
- The control-surface change is a first-party OpenCode extension setup, scoped to OpenCode commands.
- spawn uses shell:false and explicit argument arrays.
- No credential harvesting, secret reads, or package-owned exfiltration path was confirmed in inspected plugin code.
Behavioral surface
ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetworkShellWebSocket
HighEntropyStrings
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@0.26.4
matchedIdentity = npm:QHBsYW5ub3RhdG9yL29wZW5jb2Rl:0.26.4
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@0.26.8.
See all versions of @plannotator/opencode for other recorded verdicts.
- Review the evidence and your use of @plannotator/opencode@0.26.8 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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