@cachly-dev/mcp-server@0.10.140
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AI Security Review
scanned 1mo ago · by lpm-firewall-aiThis is a documented but high-impact explicit setup capability that persists command execution and forwards credentials to a configurable endpoint. It warrants a warning, not a block, because postinstall does not mutate the system and the risky path requires a user command.
Static reason
One or more suspicious static signals were detected.; previous stored version diff introduced dangerous source
Trigger
Running the package setup or autopilot command in a Git repository, followed by a commit.
Impact
A project gains ongoing command execution and conditional exposure of commit metadata and its Cachly credential to a configurable API endpoint.
Mechanism
Persisted post-commit hook invokes npx latest and sends commit metadata with configured credentials.
AI rationale
This is a documented but high-impact explicit setup capability that persists command execution and forwards credentials to a configurable endpoint. It warrants a warning, not a block, because postinstall does not mutate the system and the risky path requires a user command.
Evidence
dist/src/cls-hook.jsdist/src/index.js.git/hooks/post-commit.claude/mcp.json.cursor/mcp.json.codeium/windsurf/mcp_config.json
Network endpoints1
api.cachly.dev
Decision evidence
public snapshotAI called this Suspicious at 93.0% confidence as Dangerous Capability with low false-positive risk.
Evidence for warning
- The explicit setup path installs a Git post-commit hook that silently runs npx for the latest release of this same package.
- The installed hook collects the commit message, commit hash, and changed file names, then passes them to cls-ingest.
- The hook can embed CACHLY_JWT in the persisted hook environment.
- The active endpoint is configurable through CACHLY_API_URL, and API requests attach the resolved bearer credential.
- The npm postinstall hook only prints setup instructions; it does not itself perform the configuration writes.
Evidence against
- The risky persistence is activated by an explicit setup or autopilot command, not by npm postinstall.
- The observed default service endpoint is api.cachly.dev; static inspection did not show a hidden unrelated recipient.
Behavioral surface
ChildProcessEnvironmentVarsEvalFilesystemNetwork
HighEntropyStringsMinified
Source & flagged code
13 flagged · loading sourcepackage.jsonView file
•scripts.postinstall = node scripts/postinstall.js
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkg•scripts.postinstall = node scripts/postinstall.js
Medium
Ambiguous Install Lifecycle Script
Install-time lifecycle script is not statically allowlisted and needs review.
package.jsonView on unpkgdist/src/bench/cachly-bench.jsView file
1import{EventEmitter as F}from"node:events";import{keywordSearch as $}from"../search.js";import{rerankByQuality as q}from"../rerank.js";import{BENCH_LESSONS as B,BENCH_QUERIES as k}...
L2: `)}const j=(()=>{try{return import.meta.url===`file://${process.argv[1]}`||process.argv[1]?.endsWith("cachly-bench.ts")||process.argv[1]?.endsWith("cachly-bench.js")}catch{return!1...
High
Child Process
Findings
1 Critical10 High4 Medium6 Low
CriticalPrevious Version Dangerous Deltadist/src/index.js
HighInstall Time Lifecycle Scriptspackage.json
HighChild Processdist/src/bench/cachly-bench.js
HighSame File Env Network Executiondist/src/index.js
HighCredential Exfiltrationdist/src/index.js
HighCommand Output Exfiltrationdist/src/index.js
HighSandbox Evasion Gated Capabilitydist/src/index.js
HighTrigger Reachable Credential Exfiltrationdist/src/index.js
HighTrigger Reachable Command Output Exfiltrationdist/src/index.js
HighRuntime Package Installdist/src/cls-hook.js
HighSemantic Analysis Limiteddist/src/doctor.js#virtual:normalized:round1
Affected versions and remediation
This report applies to @cachly-dev/mcp-server@0.10.140.
See all versions of @cachly-dev/mcp-server for other recorded verdicts.
- Review the evidence and your use of @cachly-dev/mcp-server@0.10.140 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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