registry / Remote code execution / time-webkit-tag
time-webkit-tag
Time webkit tag provider for microservice architecture
This report shows the evidence for time-webkit-tag@20.1.6. 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 import-time remote-code-execution payload loader, not telemetry behavior. The lack of npm lifecycle hooks does not reduce the runtime compromise risk.
Static reason
High-risk behavior combination matched malicious policy.
Trigger
Any runtime require/import of index.js.
Impact
Arbitrary native code executes as the application user.
Mechanism
Remote payload download/write/chmod/detached execution with DNS fallback.
Attack narrative
Requiring index.js silently imports _init.js, which invokes start(). It retrieves a platform-specific payload from obfuscated workers.dev hosts, or reconstructs one from DNS TXT records, writes it into a temporary directory, makes it executable on Unix, and launches it detached through a shell or cmd.exe. The temporary state stamp merely rate-limits the execution attempt.
AI rationale
This is a concrete import-time remote-code-execution payload loader, not telemetry behavior. The lack of npm lifecycle hooks does not reduce the runtime compromise risk.
Evidence
package.jsonindex.js_init.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.cf101-adf.workers.dev/pkg/packageoob-worker.cf103-070.workers.dev/pkg/packageoob-worker.cf102-baf.workers.dev/pkg/packagetin.dl.well1.sitetina.dl.well1.site
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- index.js imports _init.js on every package import.
- _init.js downloads platform binaries from obfuscated workers.dev hosts.
- _init.js falls back to DNS TXT payload retrieval from well1.site domains.
- Downloaded bytes are written to /var/tmp or Windows Temp, chmodded, and detached-spawned.
- No manifest lifecycle hook is needed: import-time start() triggers the chain.
Evidence against
- package.json has no lifecycle scripts.
- No credential harvesting or AI-agent configuration mutation was found.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
3 flagged · loading source_init.jsView file
2L3: const https = require("https");
L4: const os = require("os");
...
L45: const CACHE_TTL = 21060;
L46: const _l = (...a) => process.stderr.write("");
L47:
...
L59: const isWin = _p("platform") === "win32";
L60: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L61: 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
2Trigger-reachable chain: manifest.main -> index.js -> _init.js
L2:
L3: const https = require("https");
L4: const os = require("os");
...
L45: const CACHE_TTL = 21060;
L46: const _l = (...a) => process.stderr.write("");
L47:
...
L59: const isWin = _p("platform") === "win32";
L60: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L61: 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.
_init.jsView on unpkg · L2122try {
L123: const cp = require("child_process");
L124: if (isWin) {
Findings
2 Critical1 High2 Medium1 Low
CriticalDownload Execute_init.js
CriticalTrigger Reachable Dangerous Capability_init.js
HighChild Process_init.js
MediumNetwork
MediumEnvironment Vars
LowFilesystem
Affected versions and remediation
This report applies to time-webkit-tag@20.1.6.
The versions list below shows the verdict for each recorded version.
- Avoid installing time-webkit-tag@20.1.6. 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: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.