MalwarePublished 7 Aug 2026

ded-pwa-c-cms (npm) · Malicious Code

Affects ded-pwa-c-cmsSource GCVE Database

Malicious package : remove ded-pwa-c-cms and rotate any secrets on hosts that installed it.

Data as of 7 Aug 2026, 15:46 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-13496

What to do

Remove ded-pwa-c-cms from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.

Affected software

Product	Affected	Fixed in
npmded-pwa-c-cms	Affected =35.9.9	Fixed in–

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Description

The npm package ded-pwa-c-cms version 35.9.9 contains malicious code that downloads and executes an opaque binary from obfuscated, author-controlled hosts. The binary is saved to temporary directories and executed detached from the main process, masquerading as a legitimate Microsoft diagnostic tool. Execution is conditionally gated by environment variables to evade detection. No integrity checks are performed on the downloaded payload, increasing risk of arbitrary code execution.

Impact

This malicious package enables remote code execution on systems that install ded-pwa-c-cms version 35.9.9 by downloading and executing an unverified binary payload. The payload runs detached from the main process and can evade telemetry detection, potentially allowing attackers to maintain persistence, execute arbitrary commands, or perform other malicious activities under the guise of a legitimate tool.

Defensive guidance

Users should immediately stop using ded-pwa-c-cms version 35.9.9 and remove it from their environments. Avoid installing or running this package until a trusted, verified version is released. Monitor for any unusual processes named similarly to Microsoft diagnostic tools and restrict execution of untrusted binaries from temporary directories. Check vendor advisories or trusted security sources for updates on remediation.

Summary

The ded-pwa-c-cms npm package (version 35.9.9) includes code in its index.js that loads a platform-specific script to download a binary payload over HTTPS from obfuscated Cloudflare Workers and other suspicious subdomains. The payload is reconstructed using a DNS-TXT fallback channel and saved to temporary locations on Unix or Windows systems with executable permissions. It is then spawned as a detached process, bypassing normal telemetry by checking environment variables such as DISABLE_TELEMETRY. The binary filename mimics a Microsoft diagnostic tool (dotnet_diag) to avoid suspicion. No hash or signature verification is performed on the downloaded payload, allowing arbitrary code execution controlled by the package author.

References

npmjs.com/package/ded-pwa-c-cms/v/35.9.9 (opens in a new tab)

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What to do

Affected software

Description

AI analysisMachine-generated, updated 7 Aug 2026, 15:46 UTC

Technical details

References

Community reviews