registry / fca-nx / 6.7.0

fca-nx@6.7.0

Facebook Messenger API for Node.js — Fast, Secure, and Feature-Rich

AI Security Review

scanned 1mo ago · by lpm-firewall-ai

The scanner's exfiltration signal maps to Facebook API and explicitly configured networking, not a package-controlled default receiver. The only cookie-forwarding DGW path requires an explicit environment flag and endpoint configuration.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review; previous stored version diff introduced dangerous source

Trigger

Package installation does not activate an attack path.

Impact

No confirmed malicious impact.

Mechanism

No confirmed unconsented collection, execution, or exfiltration.

AI rationale

Decision evidence

public snapshot

AI called this Clean at 92.0% confidence as Benign with low false-positive risk.

Evidence for AI clean decision

The manifest defines only test and lint scripts, with no install lifecycle hook.
The flagged upload function processes its caller-supplied link input and uses a Facebook upload endpoint.
The E2EE DGW path is inactive unless an explicit environment flag is set, then uses operator-supplied endpoint variables.
The flagged dynamic require enumerates JavaScript files only in the package's local database directory.

Evidence against

No hardcoded non-Facebook credential receiver or automatic exfiltration path was found.
Remote control is disabled by default with no default URL.
Credential API login refuses to run without a caller or configuration-supplied server.

Behavioral surface

Source

CryptoDynamicRequireEnvironmentVarsFilesystemNetworkWebSocket

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

Source & flagged code

8 flagged

src/api/socket/e2ee/vendor/fb-e2ee.cjsView file

Lines 110-150javascript

110var require_safe_buffer = __commonJS({

111 "node_modules/ws/node_modules/safe-buffer/index.js"(exports2, module2) {

112 "use strict";

113 init_cjs_shims();

114 var buffer = require("buffer");

115 var Buffer3 = buffer.Buffer;

116 function copyProps(src, dst) {

117 for (var key in src) {

118 dst[key] = src[key];

119 }

120 }

121 if (Buffer3.from && Buffer3.alloc && Buffer3.allocUnsafe && Buffer3.allocUnsafeSlow) {

122 module2.exports = buffer;

123 } else {

124 copyProps(buffer, exports2);

125 exports2.Buffer = SafeBuffer;

126 }

127 function SafeBuffer(arg, encodingOrOffset, length) {

128 return Buffer3(arg, encodingOrOffset, length);

129 }

130 copyProps(Buffer3, SafeBuffer);

131 SafeBuffer.from = function(arg, encodingOrOffset, length) {

132 if (typeof arg === "number") {

Critical

Hardcoded Runtime Data Exfiltration

Source sends credentials or rich application records to a package-controlled external receiver enabled by default.

src/api/socket/e2ee/vendor/fb-e2ee.cjsView on unpkg · L130

Low

Weak Crypto

Package source references weak cryptographic algorithms.

src/api/socket/e2ee/vendor/fb-e2ee.cjsView on unpkg · L130

133 throw new TypeError("Argument must not be a number");

134 }

135 return Buffer3(arg, encodingOrOffset, length);

136 };

137 SafeBuffer.alloc = function(size, fill, encoding) {

138 if (typeof size !== "number") {

139 throw new TypeError("Argument must be a number");

140 }

141 var buf = Buffer3(size);

142 if (fill !== void 0) {

143 if (typeof encoding === "string") {

144 buf.fill(fill, encoding);

145 } else {

146 buf.fill(fill);

147 }

148 } else {

149 buf.fill(0);

150 }

Lines 2944-2984javascript

2944 "kyc-id",

2945 "privacy_token",

2946 "readreceipts",

2947 "appointment_only",

2948 "address",

2949 "expected_ts",

2950 "privacy",

2951

module/loginHelper.jsView file

Lines 1-21javascript

1"use strict";

2const fs = require("fs");

3const path = require("path");

Medium

Dynamic Require

Package source references dynamic require/import behavior.

module/loginHelper.jsView on unpkg · L1

package.jsonView file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 1

High

Semantic Analysis Limited

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

package.jsonView on unpkg

src/api/threads/getThreadInfo.jsView file

•matchType = normalized_sha256 matchedPackage = shadowx-fca@10.6.0 matchedPath = src/api/threads/getThreadInfo.js matchedIdentity = npm:c2hhZG93eC1mY2E:10.6.0 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.

src/api/threads/getThreadInfo.jsView on unpkg

src/api/messaging/uploadAttachment.jsView file

•matchType = previous_version_dangerous_delta matchedPackage = fca-nx@6.6.9 matchedIdentity = npm:ZmNhLW54:6.6.9 similarity = 0.825 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.

src/api/messaging/uploadAttachment.jsView on unpkg

Source & flagged code

8 flagged · loading source

src/api/socket/e2ee/vendor/fb-e2ee.cjsView file

130copyProps(Buffer3, SafeBuffer); L131: SafeBuffer.from = function(arg, encodingOrOffset, length) { L132: if (typeof arg === "number") { ... L400: * @return {Object} Accepted configuration L401: * @private L402: */ ... L543: this._inflate[kWriteInProgress] = true; L544: this._inflate.write(data); L545: if (fin) this._inflate.write(TRAILER); ... L660: * @param {(String|Buffer|ArrayBuffer|Buffer[])} data The received data L661: * @param {WebSocket} target A reference to the target to which the event was dispatched L662: */

Critical

Hardcoded Runtime Data Exfiltration

Source sends credentials or rich application records to a package-controlled external receiver enabled by default.

src/api/socket/e2ee/vendor/fb-e2ee.cjsView on unpkg · L130

2964patternName = google_api_key severity = high line = 2964

High

High Secret

Package contains a high-severity secret pattern.

src/api/socket/e2ee/vendor/fb-e2ee.cjsView on unpkg · L2964

2964patternName = google_api_key severity = high line = 2964

High

Secret Pattern

Findings

1 Critical5 High4 Medium5 Low

CriticalHardcoded Runtime Data Exfiltrationsrc/api/socket/e2ee/vendor/fb-e2ee.cjs

HighHigh Secretsrc/api/socket/e2ee/vendor/fb-e2ee.cjs

HighSemantic Analysis Limitedpackage.json

HighKnown Malware Source Similaritysrc/api/threads/getThreadInfo.js

HighPrevious Version Dangerous Deltasrc/api/messaging/uploadAttachment.js

HighSecret Patternsrc/api/socket/e2ee/vendor/fb-e2ee.cjs

MediumDynamic Requiremodule/loginHelper.js

MediumNetwork

MediumEnvironment Vars

MediumStructural Risk Force Deep Review

LowScripts Present

LowWeak Cryptosrc/api/socket/e2ee/vendor/fb-e2ee.cjs

Affected versions and remediation

This report applies to fca-nx@6.7.0.

See all versions of fca-nx for other recorded verdicts.

Review the evidence and your use of fca-nx@6.7.0 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: 2026-09-15 15:36:44.789Z (UTC).

Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.