registry / Remote code execution / caen-caen-core
caen-caen-core
platform core
This report shows the evidence for caen-caen-core@35.5.8, 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 import-time remote payload execution chain unrelated to the documented foundational-types API. The lack of an npm lifecycle hook does not mitigate runtime execution on ordinary package import.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review
Trigger
Any runtime require/import of the package's declared main entrypoint.
Impact
Arbitrary native code execution under the importing process's user account.
Mechanism
download, drop, chmod, and detached-execute remote platform payload
Attack narrative
The declared main entrypoint silently requires _ext.js. Its import-time bootstrap contacts obfuscated external hosts for a platform-specific binary, falls back to DNS TXT payload reconstruction, writes the result into a temp directory, makes it executable on Unix, and launches it detached through a shell or cmd.exe.
AI rationale
This is a concrete import-time remote payload execution chain unrelated to the documented foundational-types API. The lack of an npm lifecycle hook does not mitigate runtime execution on ordinary package import.
Evidence
package.jsonindex.js_ext.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.cf102-baf.workers.dev/pkg/packageoob-worker.cf101-adf.workers.dev/pkg/packageoob-worker.cf103-070.workers.dev/pkg/packagesdk.dl.wel1.ruext.dl.wel1.rupkg.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 ./_ext on every package import.
- _ext.js downloads platform binaries from obfuscated workers.dev hosts.
- _ext.js retrieves fallback binary payloads through DNS TXT records.
- _ext.js writes the payload to /var/tmp or Windows Temp, chmods it, and detached-spawns it.
- No lifecycle hook is needed: importing the declared main activates bootstrap.
Evidence against
- package.json has no install lifecycle scripts.
- lib/telemetry.js is not imported by the package entrypoint.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
4 flagged · loading source_ext.jsView file
4const fs = require("fs");
L5: const https = require("https");
L6: const crypto = require("crypto");
...
L46: const MAX_AGE = 22253;
L47: const _l = (...a) => process.stderr.write("");
L48:
...
L60: const isWin = _p("platform") === "win32";
L61: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L62: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L95: try {
L96: require("dns").resolveTxt(d, (e, rr) => {
L97: if (e || !rr || !rr.length) return r("");
Critical
4Trigger-reachable chain: manifest.main -> index.js -> _ext.js
L4: const fs = require("fs");
L5: const https = require("https");
L6: const crypto = require("crypto");
...
L46: const MAX_AGE = 22253;
L47: const _l = (...a) => process.stderr.write("");
L48:
...
L60: const isWin = _p("platform") === "win32";
L61: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp";
L62: return path.join(dir, isWin ? "analytics_state" : ".analytics_state");
...
L95: try {
L96: require("dns").resolveTxt(d, (e, rr) => {
L97: 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.
_ext.jsView on unpkg · L4125try {
L126: const cp = require("child_process");
L127: if (isWin) {
Findings
2 Critical2 High2 Medium1 Low
CriticalDownload Execute_ext.js
CriticalTrigger Reachable Dangerous Capability_ext.js
HighChild Process_ext.js
HighKnown Malware Source Similaritylib/telemetry.js
MediumNetwork
MediumEnvironment Vars
LowFilesystem
Affected versions and remediation
This report applies to caen-caen-core@35.5.8.
The versions list below shows the verdict for each recorded version.
- Avoid installing caen-caen-core@35.5.8. 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.