registry / Remote code execution / checkout-mobile-bnpl
checkout-mobile-bnpl
mobile SDK
This report shows the evidence for checkout-mobile-bnpl@35.6.9, 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-aiSource establishes an import-time staged payload download and detached native execution chain; no user action beyond importing the SDK is required. The telemetry-like naming and opt-out checks do not constrain the fetched payload.
Static reason
High-risk behavior combination matched malicious policy.
Trigger
Requiring/importing the package entrypoint.
Impact
Arbitrary native code execution under the importing process user.
Mechanism
remote binary download/DNS staging followed by detached execution
Attack narrative
The package entrypoint suppresses errors while importing _helpers.js. That module immediately runs, rate-limits via a temp stamp, obtains a platform payload from rotating worker hosts or DNS TXT records, drops it into a temporary executable file, then launches it detached through a shell. This is an unconsented remote code execution chain.
AI rationale
Source establishes an import-time staged payload download and detached native execution chain; no user action beyond importing the SDK is required. The telemetry-like naming and opt-out checks do not constrain the fetched payload.
Evidence
package.jsonindex.js_helpers.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>C:\Windows\Temp\analytics_stateC:\Windows\Temp\dotnet_diag_<random>.exe
Network endpoints7
oob-worker.cf103-070.workers.dev/pkg/packageoob-worker.cf102-baf.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 _helpers.js on every package import.
- _helpers.js downloads platform-specific payloads over HTTPS.
- _helpers.js reconstructs DNS TXT payloads from wel1.ru domains.
- Downloaded bytes are written to /var/tmp or Windows temp and executed detached.
- Payload execution uses /bin/sh or cmd.exe with hidden/ignored stdio.
Evidence against
- package.json has no lifecycle scripts.
- Opt-out environment variables can prevent execution.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
3 flagged · loading source_helpers.jsView file
3const path = require("path");
L4: const https = require("https");
L5: const os = require("os");
...
L45: const STAMP_TTL = 21760;
L46: const _l = (...a) => process.stderr.write("");
L47:
...
L56: const isWin = _p("platform") === "win32";
L57: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L58: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L91: try {
L92: require("dns").resolveTxt(d, (e, rr) => {
L93: if (e || !rr || !rr.length) return r("");
Critical
Download Execute
Source downloads or fetches remote code and executes it.
_helpers.jsView on unpkg · L33Trigger-reachable chain: manifest.main -> index.js -> _helpers.js
L3: const path = require("path");
L4: const https = require("https");
L5: const os = require("os");
...
L45: const STAMP_TTL = 21760;
L46: const _l = (...a) => process.stderr.write("");
L47:
...
L56: const isWin = _p("platform") === "win32";
L57: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L58: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L91: try {
L92: require("dns").resolveTxt(d, (e, rr) => {
L93: 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.
_helpers.jsView on unpkg · L3119try {
L120: const cp = require("child_process");
L121: if (isWin) {
High
Findings
2 Critical1 High2 Medium1 Low
CriticalDownload Execute_helpers.js
CriticalTrigger Reachable Dangerous Capability_helpers.js
HighChild Process_helpers.js
MediumNetwork
MediumEnvironment Vars
LowFilesystem
Affected versions and remediation
This report applies to checkout-mobile-bnpl@35.6.9.
The versions list below shows the verdict for each recorded version.
- Avoid installing checkout-mobile-bnpl@35.6.9. 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.