@testsmith/api-spector-agent@0.7.6
API Spector private runner: monitor internal/local APIs the cloud cannot reach, with no inbound connections.
AI Security Review
scanned 23d ago · by lpm-firewall-aiThe expression evaluation creates a real sandbox escape risk when a crafted monitor reaches the runner, so this warrants a warning. The inspected source does not show an active attack in the package's default startup path.
Static reason
One or more suspicious static signals were detected.
Trigger
The configured agent polls for a monitor and processes a request containing a nontrivial template expression.
Impact
A crafted expression may reach the runner process's privileges; no actual exploitation is established from the inspected source.
Mechanism
The interpolation helper evaluates such expressions in a VM context containing host functions.
AI rationale
The expression evaluation creates a real sandbox escape risk when a crafted monitor reaches the runner, so this warrants a warning. The inspected source does not show an active attack in the package's default startup path.
Evidence
dist/index.cjs
Network endpoints1
${APP_URL}/api/monitor-runtime/due
Decision evidence
public snapshotAI called this Suspicious at 94.0% confidence as Critical Vulnerability with medium false-positive risk.
Evidence for warning
- The package exposes dist/index.cjs as its command-line and module entrypoint.
- Template expressions are evaluated with Node's VM using host-provided faker and dayjs objects.
- The agent polls the configured application endpoint for due monitors and passes each monitor's request into the request runner.
- The request URL is built from monitor data through the interpolation path.
Evidence against
- The risky path requires the running agent to process a crafted monitor expression; no active exploit or file change is established by the inspected source.
Behavioral surface
CryptoEnvironmentVarsFilesystemNetwork
HighEntropyStringsPossibleObfuscationUrlStrings
Source & flagged code
6 flaggeddist/index.cjsView file
247}, m76.utcOffset = function() {
L248: return 15 * -Math.round(this.$d.getTimezoneOffset() / 15);
L249: }, m76.diff = function(r53, d75, l76) {
...
L356: * @see DOMParser.SupportedType.isHTML
L357: * @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration
L358: * @see https://en.wikipedia.org/wiki/HTML Wikipedia
...
L578: /**
L579: * @private
L580: * @param {function (Node):boolean} predicate
...
L915: function _xmlEncoder(c70) {
L916: return c70 == "<" && "<" || c70 == ">" && ">" || c70 == "&" && "&" || c70 == '"' && """ || "&#" + c70.charCodeAt() + ";";
L917: }
High
Obfuscated Payload Loader
Source contains an obfuscated payload loader that reconstructs and executes hidden code.
dist/index.cjsView on unpkg · L247•stage = ast_semantic_analysis; reason = ast_trace_path_limit_exceeded; limitedFiles = 1
High
Semantic Analysis Limited
A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.
dist/index.cjsView on unpkg247}, m76.utcOffset = function() {
L248: return 15 * -Math.round(this.$d.getTimezoneOffset() / 15);
L249: }, m76.diff = function(r53, d75, l76) {
...
L356: * @see DOMParser.SupportedType.isHTML
L357: * @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration
L358: * @see https://en.wikipedia.org/wiki/HTML Wikipedia
...
L578: /**
L579: * @private
L580: * @param {function (Node):boolean} predicate
...
L915: function _xmlEncoder(c70) {
L916: return c70 == "<" && "<" || c70 == ">" && ">" || c70 == "&" && "&" || c70 == '"' && """ || "&#" + c70.charCodeAt() + ";";
L917: }
Findings
2 High7 Medium3 Low
HighObfuscated Payload Loaderdist/index.cjs
HighSemantic Analysis Limiteddist/index.cjs
MediumUnsafe Vm Contextdist/index.cjs
MediumNetwork
MediumEnvironment Vars
MediumOversized Source Filedist/index.cjs
MediumOversized Cli Entrypointdist/index.cjs
MediumStructural Risk Force Deep Review
MediumAi Review Evidencepackage.json
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to @testsmith/api-spector-agent@0.7.6.
See all versions of @testsmith/api-spector-agent for other recorded verdicts.
- Review the evidence and your use of @testsmith/api-spector-agent@0.7.6 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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