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@softize/opus@17.2.0: Malicious npm security report (Block) | LPM Firewall

registry / @softize/opus / 17.2.0

@softize/opus@17.2.0

End-to-end action protocol for TypeScript. Single package with subpath exports (core + adapters).

AI Security Review

scanned 26d ago · by lpm-firewall-ai

Installing the dependency automatically changes the consuming project's AI-agent configuration and Git hook setup. This is an unconsented broad control-surface mutation.

Static reason

One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review; previous stored version diff introduced dangerous source

Trigger

npm installation of @softize/opus.

Impact

It can alter AI-agent behavior and repository hook execution without an explicit user command.

Mechanism

Postinstall materializes agent skills, a Claude Stop hook, settings, and Git hooks in the consumer project.

Attack narrative

The package's postinstall invokes initialization in the consuming project. That initializer writes skills into agent directories, installs a Claude Stop hook, and changes .claude/settings.json to execute the hook when an agent stops. It also materializes Git hooks and can configure Git's hooks path. These changes occur automatically during installation rather than through an explicit setup command, giving the package control over foreign agent and repository behavior.

AI rationale

The automatic lifecycle script mutates broad AI-agent and repository control surfaces in a consumer project. This meets the install-hook abuse blocking policy despite no observed exfiltration.

Evidence

package.jsonbin/lib/postinstall.mjsbin/lib/materialize.mjs.agents/skills/.claude/skills/.claude/hooks/opus-check-on-stop.mjs.claude/settings.json.githooks/.git/config

Source & flagged code

8 flagged · loading source

package.jsonView file

•scripts.postinstall = node ./bin/lib/postinstall.mjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node ./bin/lib/postinstall.mjs

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

src/ui/docs/markdown.tsxView file

59) L60: const fn = new Function(...entries.map(([k]) => k), js) L61: const args = entries.map(([, v]) => v)

Low

Eval

Package source references a known benign dynamic code generation pattern.

src/ui/docs/markdown.tsxView on unpkg · L59

bin/lib/db-migrate-runner.mjsView file

47const configPath = resolveDbConfigPath(projectRoot, requestedConfigPath).path L48: const mod = await import(pathToFileURL(path.resolve(configPath)).href) L49: const config = mod.default ?? mod

Medium

Dynamic Require

Package source references dynamic require/import behavior.

bin/lib/db-migrate-runner.mjsView on unpkg · L47

bin/lib/cli-shared.mjsView file

•stage = ast_semantic_analysis; reason = ast_alias_growth_limit_exceeded; limitedFiles = 10

High

Semantic Analysis Limited

A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.

bin/lib/cli-shared.mjsView on unpkg

•matchType = normalized_sha256 matchedPackage = @softize/opus@17.0.0 matchedPath = bin/lib/cli-shared.mjs matchedIdentity = npm:QHNvZnRpemUvb3B1cw:17.0.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

bin/lib/cli-shared.mjsView on unpkg

•matchType = previous_version_dangerous_delta matchedPackage = @softize/opus@12.6.1 matchedIdentity = npm:QHNvZnRpemUvb3B1cw:12.6.1 similarity = 0.508 summary = stored previous version shares package body but lacks this dangerous source file

High

Previous Version Dangerous Delta

This package version adds a dangerous source file absent from the previous stored version; route for source-aware review.

bin/lib/cli-shared.mjsView on unpkg

bin/lib/init.mjsView file

•matchType = normalized_sha256 matchedPackage = @softize/opus@17.0.0 matchedPath = bin/lib/init.mjs matchedIdentity = npm:QHNvZnRpemUvb3B1cw:17.0.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

bin/lib/init.mjsView on unpkg

Source & flagged code

8 flagged

package.jsonView file

Lines 351-381json

351 "jsonwebtoken": "^9.0.2",

352 "kysely": "^0.27.0",

353 "node-cron": "^3.0.3",

354 "pg": "^8.13.0",

355 "pino": "^9.5.0",

356 "react": "^19.0.0",

357 "react-dom": "^19.0.0",

358 "react-hook-form": "^7.54.0",

359 "tsx": "^4.19.0",

360 "vite": "^6.0.0",

361 "vitest": "^2.1.0",

362 "zod": "^3.24.0"

363 },

364 "repository": {

365 "type": "git",

366 "url": "git+https://github.com/softize-dev/opus.git",

367 "directory": "packages/opus"

368 },

369 "homepage": "https://opus.softize.com.br",

370 "scripts": {

371 "postinstall": "node ./bin/lib/postinstall.mjs",

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L371

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg · L371

372 "copy:check": "node ./bin/cli.mjs copy --check",

373 "typecheck": "tsc --noEmit",

374 "test": "vitest run",

375 "test:watch": "vitest",

376 "test:cov": "vitest run --coverage",

377 "registry:up": "npx -y verdaccio --config ~/.config/verdaccio/config.yaml",

378 "release": "bash ./scripts/release.sh",

379 "release:local": "bash ./scripts/release.sh --local"

380 }

381}

src/ui/docs/markdown.tsxView file

Lines 39-79tsx

39 scope,

40 previewClassName,

41}: {

42 code: string

43 scope: Record<string, unknown>

44 previewClassName?: string

45}): React.ReactElement {

46 const result = React.useMemo

bin/lib/db-migrate-runner.mjsView file

Lines 27-67javascript

27 process.stdout.write(`\n${JSON.stringify(obj)}\n`)

28}

29

30function collectEntities(domain, out

bin/lib/cli-shared.mjsView file

•stage = ast_semantic_analysis; reason = ast_alias_growth_limit_exceeded; limitedFiles = 10

High

Semantic Analysis Limited

A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.

bin/lib/cli-shared.mjsView on unpkg

•matchType = normalized_sha256 matchedPackage = @softize/opus@17.0.0 matchedPath = bin/lib/cli-shared.mjs matchedIdentity = npm:QHNvZnRpemUvb3B1cw:17.0.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

bin/lib/cli-shared.mjsView on unpkg

•matchType = previous_version_dangerous_delta matchedPackage = @softize/opus@12.6.1 matchedIdentity = npm:QHNvZnRpemUvb3B1cw:12.6.1 similarity = 0.508 summary = stored previous version shares package body but lacks this dangerous source file

High

Previous Version Dangerous Delta

This package version adds a dangerous source file absent from the previous stored version; route for source-aware review.

bin/lib/cli-shared.mjsView on unpkg

bin/lib/init.mjsView file

•matchType = normalized_sha256 matchedPackage = @softize/opus@17.0.0 matchedPath = bin/lib/init.mjs matchedIdentity = npm:QHNvZnRpemUvb3B1cw:17.0.0 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

bin/lib/init.mjsView on unpkg