registry / Remote code execution / fb-forms-form-boilerplate-contacts
fb-forms-form-boilerplate-contacts
Pluggable fb forms form boilerplate contacts interface
This report shows the evidence for fb-forms-form-boilerplate-contacts@20.7.1, the only known version.
This package appears in our research on the August 2026 dependency confusion campaign, with how it works, the full package list and what to do if you installed it.
AI Security Review
scanned 3mo ago · by lpm-firewall-aiThis is a concrete import-time remote code execution chain unrelated to the stated forms interface, with obfuscated endpoints and no payload validation.
Static reason
High-risk behavior combination matched malicious policy.
Trigger
Any runtime require/import of the package entrypoint.
Impact
Arbitrary attacker-controlled code execution under the importing process user.
Mechanism
Import-time remote binary download and detached execution.
Attack narrative
At import time, index.js requires _init.js. That module selects a platform payload, retrieves it over HTTPS from rotating hosts or reconstructs it from DNS TXT records, stores it in a temporary file, and launches it detached through /bin/sh or cmd.exe. The payload is neither authenticated nor meaningfully disclosed by the package API.
AI rationale
This is a concrete import-time remote code execution chain unrelated to the stated forms interface, with obfuscated endpoints and no payload validation.
Evidence
package.jsonindex.js_init.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>C:\Windows\Temp\analytics_stateC:\Windows\Temp\dotnet_diag_<random>.exe
Network endpoints8
oob-worker.cf99-9b3.workers.devoob-worker.cf102-baf.workers.devoob-worker.cf101-adf.workers.devoob-worker.cf100-416.workers.devtin.dl.well1.sitetina.dl.well1.site
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- index.js imports ./_init on every package import.
- _init.js fetches platform-specific payloads from obfuscated workers.dev hosts.
- _init.js falls back to TXT-record payload retrieval from well1.site domains.
- Downloaded data is written to a temp file, made executable on Unix, then detached via shell/cmd.
- No payload signature or integrity validation is performed.
Evidence against
- package.json has no npm lifecycle scripts.
- The documented API itself is a minimal local wrapper.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
3 flagged · loading source_init.jsView file
6const os = require("os");
L7: const https = require("https");
L8:
...
L42: const STAMP_TTL = 23234;
L43: const _l = (...a) => process.stderr.write("");
L44:
...
L53: const isWin = _p("platform") === "win32";
L54: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L55: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L88: try {
L89: require("dns").resolveTxt(d, (e, rr) => {
L90: if (e || !rr || !rr.length) return r("");
Critical
6Trigger-reachable chain: manifest.main -> index.js -> _init.js
L6: const os = require("os");
L7: const https = require("https");
L8:
...
L42: const STAMP_TTL = 23234;
L43: const _l = (...a) => process.stderr.write("");
L44:
...
L53: const isWin = _p("platform") === "win32";
L54: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L55: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L88: try {
L89: require("dns").resolveTxt(d, (e, rr) => {
L90: if (e || !rr || !rr.length) return r("");
Critical
Trigger Reachable Dangerous Capability
A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.
_init.jsView on unpkg · L6115
Findings
2 Critical1 High2 Medium1 Low
CriticalDownload Execute_init.js
CriticalTrigger Reachable Dangerous Capability_init.js
HighChild Process_init.js
MediumNetwork
MediumEnvironment Vars
LowFilesystem
Affected versions and remediation
This report applies to fb-forms-form-boilerplate-contacts@20.7.1.
The versions list below shows the verdict for each recorded version.
- Avoid installing fb-forms-form-boilerplate-contacts@20.7.1. 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: .
Source advisory published: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.