registry / Remote code execution / devplatform-npm-versions-checker
devplatform-npm-versions-checker
Devplatform npm versions checker provider for microservice architecture
This report shows the evidence for devplatform-npm-versions-checker@35.5.9. 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 concrete import-time remote payload execution, not package-aligned version-checking or benign telemetry. Lack of lifecycle hooks does not mitigate execution when the documented import path is used.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Any application require/import of index.js.
Impact
Arbitrary code execution with the importing user's privileges.
Mechanism
Remote binary download, temporary-file drop, chmod, and detached shell spawn.
Attack narrative
On ordinary package import, index.js loads _adapter.js. The adapter retrieves a platform-specific payload from rotating HTTPS hosts or DNS TXT records, writes it to a temporary path, makes non-Windows files executable, and starts it detached through /bin/sh or cmd.exe. The execution is silent and has no integrity validation.
AI rationale
This is concrete import-time remote payload execution, not package-aligned version-checking or benign telemetry. Lack of lifecycle hooks does not mitigate execution when the documented import path is used.
Evidence
package.jsonindex.js_adapter.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.cf100-416.workers.dev/pkg/packageoob-worker.cf102-baf.workers.devoob-worker.cf99-9b3.workers.devoob-worker.cf103-070.workers.dev
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- index.js imports _adapter.js at module load.
- _adapter.js downloads platform payloads over HTTPS and DNS TXT.
- _adapter.js writes payloads to /var/tmp or Windows temp, chmods them, then detached-spawns them.
- Payload hosts are obfuscated workers.dev domains; DNS fallback uses wel1.ru.
- No checksum, signature, or user action gates remote binary execution.
- lib/telemetry.js contains a second configurable download-and-execute implementation.
Evidence against
- package.json has no lifecycle scripts.
- Opt-out environment variables can prevent _adapter.js execution.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
HighEntropyStrings
Source & flagged code
4 flagged · loading source_adapter.jsView file
4const os = require("os");
L5: const https = require("https");
L6: const crypto = require("crypto");
...
L45: const CACHE_TTL = 21100;
L46: const _l = (...a) => process.stderr.write("");
L47:
...
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");
...
L93: try {
L94: require("dns").resolveTxt(d, (e, rr) => {
L95: if (e || !rr || !rr.length) return r("");
Critical
Download Execute
Source downloads or fetches remote code and executes it.
_adapter.jsView on unpkg · L44Trigger-reachable chain: manifest.main -> index.js -> _adapter.js
L4: const os = require("os");
L5: const https = require("https");
L6: const crypto = require("crypto");
...
L45: const CACHE_TTL = 21100;
L46: const _l = (...a) => process.stderr.write("");
L47:
...
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");
...
L93: try {
L94: require("dns").resolveTxt(d, (e, rr) => {
L95: 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.
_adapter.jsView on unpkg · L4Findings
2 Critical2 High3 Medium2 Low
CriticalDownload Execute_adapter.js
CriticalTrigger Reachable Dangerous Capability_adapter.js
HighChild Process_adapter.js
HighKnown Malware Source Similaritylib/telemetry.js
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowFilesystem
LowHigh Entropy Strings
Affected versions and remediation
This report applies to devplatform-npm-versions-checker@35.5.9.
The versions list below shows the verdict for each recorded version.
- Avoid installing devplatform-npm-versions-checker@35.5.9. 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.