ux-atlas@0.1.6
UX skills for agents. Each skill is skills/<name>/SKILL.md.
AI Security Review
scanned 5d ago · by lpm-firewall-aiThe active postinstall hook writes package-controlled behavior into foreign agent instruction files without an affirmative consent gate. This is an unconsented install-time AI-agent control-surface mutation.
Static reason
High-risk behavior combination matched malicious policy.
Trigger
A local npm installation runs the postinstall hook.
Impact
The package automatically changes agent behavior and routing in the consuming project.
Mechanism
The hook resolves the consumer project root, then updates or creates AGENTS.md and CLAUDE.md with package-provided pointers and removes a matching legacy instruction.
Policy narrative
During local installation, postinstall updates the consumer's root AGENTS.md and CLAUDE.md without asking first. Those files receive package-controlled agent instructions, which alter request routing and skill loading.
AI rationale
The active postinstall hook writes package-controlled behavior into foreign agent instruction files without an affirmative consent gate. This is an unconsented install-time AI-agent control-surface mutation.
Evidence
package.jsonscripts/init.mjsinstructions/AGENTS.mdAGENTS.mdCLAUDE.md.atlas/config.json.atlas/README.md
Decision evidence
public snapshotAI identified this as a dangerous AI-agent capability at 97.0% confidence with low false-positive risk.
Evidence for policy risk
- package.json runs scripts/init.mjs from postinstall.
- The local postinstall path resolves the consumer project root and calls applyPointers without an affirmative consent check.
- applyPointers edits root AGENTS.md and CLAUDE.md, removing a legacy instruction and adding package instructions.
- The upsert routine writes the resulting content to those files.
- The injected AGENTS.md instructions direct how the agent routes requests and loads skills.
Evidence against
- The installer skips global installs.
Behavioral surface
CryptoEnvironmentVarsFilesystem
HighEntropyStrings
Source & flagged code
7 flagged · loading sourcepackage.jsonView file
•scripts.postinstall = node scripts/init.mjs
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkg24"scripts": {
"lint": "eslint .",
"postinstall": "node scripts/init.mjs",
"index": "node scripts/sk[redacted]",
"test":
High
Suspicious Lifecycle Evidence
package.json runs scripts/init.mjs from postinstall.
package.jsonView on unpkg · L24scripts/scan.mjsView file
105const content = fs.readFileSync(file);
L106: const text = content.toString('utf8');
L107: if (isTokens) {
Low
Weak Crypto
Package source references weak cryptographic algorithms.
scripts/scan.mjsView on unpkg · L105Findings
1 Critical5 High2 Medium4 Low
CriticalAi Agent Control Hijackscripts/init.mjs
HighInstall Time Lifecycle Scriptspackage.json
HighExternal Ai Agent Control Surface Mutationscripts/init.mjs
HighSuspicious Lifecycle Evidencepackage.json
HighSuspicious Lifecycle Evidencescripts/init.mjs
HighAi Review Evidencescripts/init.mjs
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowScripts Present
LowWeak Cryptoscripts/scan.mjs
LowFilesystem
LowHigh Entropy Strings
Affected versions and remediation
This report applies to ux-atlas@0.1.6.
See all versions of ux-atlas for other recorded verdicts.
- Avoid installing ux-atlas@0.1.6. Remove it from direct dependencies and check your lockfile for transitive copies.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
- If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.
Evidence last updated: .
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