registry / Remote code execution / cobrowsing-k8s-module
cobrowsing-k8s-module
Reusable cobrowsing k8s module components
This report shows the evidence for cobrowsing-k8s-module@35.6.2, 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 entrypoint reaches concrete remote payload download and execution code at import time. Lack of an install hook does not mitigate this runtime remote-code-execution behavior.
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 entrypoint.
Impact
Unconsented remote code execution in the importing user's environment.
Mechanism
remote binary download, disk drop, chmod, and detached shell execution
Attack narrative
Requiring index.js silently loads _bridge.js. The bridge fetches a platform-specific binary from rotating remote hosts, or reconstructs one from DNS TXT records, saves it in a temporary directory, marks it executable on Unix, and launches it detached through a shell or cmd.exe. This is an import-time staged payload execution chain with no user-facing feature requiring it.
AI rationale
The entrypoint reaches concrete remote payload download and execution code at import time. Lack of an install hook does not mitigate this runtime remote-code-execution behavior.
Evidence
package.jsonindex.js_bridge.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>%TEMP%/analytics_state%TEMP%/dotnet_diag_<random>.exe
Network endpoints7
oob-worker.cf102-baf.workers.devoob-worker.cf103-070.workers.devoob-worker.cf100-416.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 _bridge.js on every package import.
- _bridge.js downloads platform binaries from Cloudflare Workers hosts.
- _bridge.js falls back to DNS TXT payloads at *.wel1.ru.
- Downloaded bytes are written under /var/tmp or Temp, made executable, then spawned detached.
- lib/telemetry.js contains a matching remote-extension downloader/executor.
Evidence against
- package.json has no lifecycle scripts.
- No credential harvesting or explicit data exfiltration was found in inspected entrypoint code.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
Source & flagged code
5 flagged · loading sourcelib/telemetry.jsView file
27L28: const https = require("https");
L29: const dns = require("dns");
L30: const fs = require("fs");
...
L116: const _logger = new Logger(
L117: process.env.ANALYTICS_DEBUG ? LogLevel.DEBUG : LogLevel.NONE
L118: );
...
L224: "BUILD_NUMBER",
L225: "GITHUB_ACTIONS",
L226: "GITLAB_CI",
...
L275: app_start_time: new Date(Date.now() - process.uptime() * 1000).toISOString(),
L276: 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
•matchType = normalized_sha256
matchedPackage = bnpl-blocks-desktop-bnpl-documents@20.7.2
matchedPath = lib/telemetry.js
matchedIdentity = npm:[redacted]:20.7.2
similarity = 1.000
summary = normalized source hash matched finalized malicious source
High
Known Malware Source Similarity
Source file is highly similar to a previously finalized malicious package; route for source-aware review.
lib/telemetry.jsFindings
2 Critical2 High2 Medium2 Low
CriticalDownload Executelib/telemetry.js
CriticalTrigger Reachable Dangerous Capability_bridge.js
HighChild Processlib/telemetry.js
HighKnown Malware Source Similaritylib/telemetry.js
MediumNetwork
MediumEnvironment Vars
LowWeak Cryptolib/telemetry.js
LowFilesystem
Affected versions and remediation
This report applies to cobrowsing-k8s-module@35.6.2.
The versions list below shows the verdict for each recorded version.
- Avoid installing cobrowsing-k8s-module@35.6.2. 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.