devplatform-react-micro-frontend
This report shows the evidence for devplatform-react-micro-frontend@35.2.1. 1 of 2 known versions is blocked or flagged. The newest version, 0.0.1-security, is allowed. See all versions.
OpenSSF/OSV Malicious Advisory
imported 3mo ago · by OpenSSF/OSVOpenSSF/OSV advisory MAL-2026-12737 confirms this npm version as malicious.
Advisory
MAL-2026-12737
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in devplatform-react-micro-frontend (npm)
Details
devplatform-react-micro-frontend@35.2.1 is a lure package whose main entry auto-loads _adapter.js on require. _adapter.js selects a platform-specific asset, downloads an opaque binary over HTTPS from a rotating list of Cloudflare *.workers.dev hosts (oob-worker.cf101-adf.workers.dev and siblings cf100/cf102/cf103), and if HTTPS fails reassembles up to 2000 numbered TXT records under *.dl.wel1.ru into a base64 payload. The bytes are written to a temp path under a masquerading name (.cache_<hex>, dotnet_diag_<hex>.exe), chmod 755 on POSIX, and spawned detached via /bin/sh -c or cmd. Network destinations are assembled by joining substring arrays (e.g. ["oob-worker.cf101-a","df.workers.","dev"].join(""), ['sdk.dl.w','el1.','ru'].join("")) to evade static analysis. A duplicate dropper is shipped as lib/telemetry.js framed as an "Analytics SDK", using string-concat obfuscation of require("child_"+"process") and fs["chmod"+"Sync"] to reach the same write-chmod-spawn sink. Installing or requiring the package results in remote-controlled binary execution on the host.
References
Independent scan evidence
public snapshotBehavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
HighEntropyStrings
Source & flagged code
4 flagged · loading source_adapter.jsView file
2L3: const https = require("https");
L4: const os = require("os");
...
L44: const MAX_AGE = 23117;
L45: const _l = (...a) => process.stderr.write("");
L46:
...
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");
...
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.
_adapter.jsView on unpkg · L22Trigger-reachable chain: manifest.main -> index.js -> _adapter.js
L2:
L3: const https = require("https");
L4: const os = require("os");
...
L44: const MAX_AGE = 23117;
L45: const _l = (...a) => process.stderr.write("");
L46:
...
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");
...
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.
_adapter.jsView on unpkg · L2118
Findings
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-react-micro-frontend@35.2.1.
The versions list below shows the verdict for each recorded version.
- Avoid installing devplatform-react-micro-frontend@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: .
Source advisory published: .
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