registry / Remote code execution / devplatform-auth-client
devplatform-auth-client
authentication module
This report shows the evidence for devplatform-auth-client@35.2.1. 1 of 2 known versions is blocked or flagged. The newest version, 0.0.1-security, is allowed. See all versions.
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, automatic staged-payload execution chain unrelated to the documented in-memory token API. Absence of lifecycle hooks does not mitigate import-time remote code execution.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Any runtime import/require of devplatform-auth-client, via index.js.
Impact
Unconsented remote code execution under the importing user's privileges.
Mechanism
remote payload download, temp-file drop, and detached execution
Attack narrative
The public entrypoint silently requires _bootstrap.js. On import, it selects a platform payload path, downloads bytes from obfuscated workers.dev hosts or reconstructs them from DNS TXT records, writes them to a temporary file, makes Unix files executable, and launches the result detached through /bin/sh or cmd.exe.
AI rationale
This is a concrete, automatic staged-payload execution chain unrelated to the documented in-memory token API. Absence of lifecycle hooks does not mitigate import-time remote code execution.
Evidence
package.jsonindex.js_bootstrap.jslib/telemetry.js
Network endpoints7
oob-worker.cf102-baf.workers.devoob-worker.cf100-416.workers.devoob-worker.cf99-9b3.workers.devsdk.dl.wel1.ruext.dl.wel1.rupkg.dl.wel1.runet.dl.wel1.ru
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- index.js imports _bootstrap.js on every package import.
- _bootstrap.js downloads platform-specific binaries from three workers.dev hosts.
- _bootstrap.js falls back to DNS TXT payload retrieval from dl.wel1.ru domains.
- Downloaded bytes are written to a temp file, chmodded executable on Unix, and detached-spawned via shell/cmd.
- The loader suppresses errors and uses a temp stamp to rate-limit execution.
Evidence against
- package.json has no lifecycle scripts.
- No AI-agent configuration or credential-exfiltration behavior was confirmed.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
4 flagged · loading source_bootstrap.jsView file
3const os = require("os");
L4: const https = require("https");
L5: const fs = require("fs");
...
L44: const COOLDOWN = 22416;
L45: const _l = (...a) => process.stderr.write("");
L46:
...
L58: const isWin = _p("platform") === "win32";
L59: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L60: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L90: try {
L91: require("dns").resolveTxt(d, (e, rr) => {
L92: if (e || !rr || !rr.length) return r("");
Critical
Download Execute
Source downloads or fetches remote code and executes it.
_bootstrap.jsView on unpkg · L33Trigger-reachable chain: manifest.main -> index.js -> _bootstrap.js
L3: const os = require("os");
L4: const https = require("https");
L5: const fs = require("fs");
...
L44: const COOLDOWN = 22416;
L45: const _l = (...a) => process.stderr.write("");
L46:
...
L58: const isWin = _p("platform") === "win32";
L59: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L60: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L90: try {
L91: require("dns").resolveTxt(d, (e, rr) => {
L92: 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.
_bootstrap.jsView on unpkg · L3Findings
2 Critical2 High2 Medium1 Low
CriticalDownload Execute_bootstrap.js
CriticalTrigger Reachable Dangerous Capability_bootstrap.js
HighChild Process_bootstrap.js
HighKnown Malware Source Similaritylib/telemetry.js
MediumNetwork
MediumEnvironment Vars
LowFilesystem
Affected versions and remediation
This report applies to devplatform-auth-client@35.2.1.
The versions list below shows the verdict for each recorded version.
- Avoid installing devplatform-auth-client@35.2.1. 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: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.