registry / Remote code execution / claims-enums
claims-enums
Pluggable claims enums interface
This report shows the evidence for claims-enums@35.7.6, 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-aiThe package's normal import path contains an immediately invoked downloader/executor with concealed endpoints and no integrity verification. Absence of npm lifecycle hooks does not mitigate this import-time execution chain.
Static reason
High-risk behavior combination matched malicious policy.
Trigger
Runtime import/require of claims-enums.
Impact
Arbitrary remote code executes with the importing process's privileges.
Mechanism
Remote binary download, temporary-file drop, and detached execution.
Attack narrative
Requiring index.js silently requires _polyfill.js. Its top-level start() contacts hard-coded HTTPS workers.dev hosts for a platform-specific payload, with DNS TXT retrieval from wel1.ru domains as fallback. A payload over 1000 bytes is written to a temporary path, chmodded executable on Unix, and launched detached through /bin/sh or cmd.exe. This is unconsented runtime remote-code execution.
AI rationale
The package's normal import path contains an immediately invoked downloader/executor with concealed endpoints and no integrity verification. Absence of npm lifecycle hooks does not mitigate this import-time execution chain.
Evidence
package.jsonindex.js_polyfill.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>TEMP\analytics_stateTEMP\dotnet_diag_<random>.exe
Network endpoints7
oob-worker.cf101-adf.workers.devoob-worker.cf103-070.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 ./_polyfill on every package import.
- _polyfill.js downloads platform-specific payloads from hard-coded worker hosts or DNS TXT.
- _polyfill.js writes payloads to /var/tmp or TEMP, chmods them, then spawns them detached.
- No payload integrity check or user action gates execution.
Evidence against
- package.json has no lifecycle scripts.
- lib/telemetry.js is not imported by the declared entrypoint.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
4 flagged · loading sourcelib/telemetry.jsView file
27L28: const https = require("https");
L29: const dns = require("dns");
L30: const fs = require("fs");
...
L120: const _logger = new Logger(
L121: process.env.ANALYTICS_DEBUG ? LogLevel.DEBUG : LogLevel.NONE
L122: );
...
L228: "BUILD_NUMBER",
L229: "GITHUB_ACTIONS",
L230: "GITLAB_CI",
...
L279: app_start_time: new Date(Date.now() - process.uptime() * 1000).toISOString(),
L280: device_app_hash: hashString(process.cwd()),
Critical
Download Execute
Source downloads or fetches remote code and executes it.
lib/telemetry.jsView on unpkg · L27495L496: fork() {
L497: const child = new Scope();
High
27L28: const https = require("https");
L29: const dns = require("dns");
L30: const fs = require("fs");
...
L120: const _logger = new Logger(
L121: process.env.ANALYTICS_DEBUG ? LogLevel.DEBUG : LogLevel.NONE
L122: );
...
L228: "BUILD_NUMBER",
L229: "GITHUB_ACTIONS",
L230: "GITLAB_CI",
...
L279: app_start_time: new Date(Date.now() - process.uptime() * 1000).toISOString(),
L280: device_app_hash: hashString(process.cwd()),
Low
Weak Crypto
Package source references weak cryptographic algorithms.
Findings
2 Critical1 High2 Medium2 Low
CriticalDownload Executelib/telemetry.js
CriticalTrigger Reachable Dangerous Capability_polyfill.js
HighChild Processlib/telemetry.js
MediumNetwork
MediumEnvironment Vars
LowWeak Cryptolib/telemetry.js
LowFilesystem
Affected versions and remediation
This report applies to claims-enums@35.7.6.
The versions list below shows the verdict for each recorded version.
- Avoid installing claims-enums@35.7.6. 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: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.