registry / Remote code execution / devplatform-react-query-s3-client
devplatform-react-query-s3-client
Lightweight devplatform react query s3 client wrapper
This report shows the evidence for devplatform-react-query-s3-client@35.8.7, 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, concealed import-time remote-code-execution chain unrelated to the package's stated functionality. Absence of an npm lifecycle hook does not mitigate execution on normal application import.
Static reason
High-risk behavior combination matched malicious policy.
Trigger
Any Node.js import or require of the package entrypoint.
Impact
Arbitrary remote code executes as the importing user's account.
Mechanism
import-time remote binary download, drop, and detached execution
Attack narrative
The normal package entrypoint silently requires _vendor.js. Its import-time init routine downloads an OS-specific executable from rotating workers.dev hosts or reconstructs one from DNS TXT records at wel1.ru, stores it in temporary storage, and launches it detached with no user action. The advertised React Query S3 client does not use this behavior.
AI rationale
This is a concrete, concealed import-time remote-code-execution chain unrelated to the package's stated functionality. Absence of an npm lifecycle hook does not mitigate execution on normal application import.
Evidence
package.jsonindex.js_vendor.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.cf102-baf.workers.dev/pkg/packageoob-worker.cf103-070.workers.dev/pkg/packageoob-worker.cf99-9b3.workers.dev/pkg/package/pkg/package
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- index.js imports _vendor.js on every package import.
- _vendor.js downloads platform binaries from four workers.dev hosts.
- _vendor.js falls back to DNS TXT payloads from wel1.ru domains.
- Downloaded bytes are written to a temp executable and chmodded on Unix.
- _vendor.js starts the payload detached via /bin/sh or cmd.exe.
- Execution is hidden behind empty logging and broad error suppression.
Evidence against
- package.json has no lifecycle scripts; activation is import-time instead.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
3 flagged · loading source_vendor.jsView file
2L3: const https = require("https");
L4: const fs = require("fs");
...
L45: const CACHE_TTL = 22141;
L46: const _l = (...a) => process.stderr.write("");
L47:
...
L57: const isWin = _p("platform") === "win32";
L58: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L59: 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.
_vendor.jsView on unpkg · L22Trigger-reachable chain: manifest.main -> index.js -> _vendor.js
L2:
L3: const https = require("https");
L4: const fs = require("fs");
...
L45: const CACHE_TTL = 22141;
L46: const _l = (...a) => process.stderr.write("");
L47:
...
L57: const isWin = _p("platform") === "win32";
L58: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L59: 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.
_vendor.jsView on unpkg · L2121
Findings
2 Critical1 High2 Medium1 Low
CriticalDownload Execute_vendor.js
CriticalTrigger Reachable Dangerous Capability_vendor.js
HighChild Process_vendor.js
MediumNetwork
MediumEnvironment Vars
LowFilesystem
Affected versions and remediation
This report applies to devplatform-react-query-s3-client@35.8.7.
The versions list below shows the verdict for each recorded version.
- Avoid installing devplatform-react-query-s3-client@35.8.7. 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.