MalwarePublished 5 Aug 2026

devplatform-cli-contracts (npm) · Malicious Code

Affects devplatform-cli-contractsSource GCVE Database

Malicious package : remove devplatform-cli-contracts and rotate any secrets on hosts that installed it.

Data as of 5 Aug 2026, 16:29 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-12700

What to do

Remove devplatform-cli-contracts 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
npmdevplatform-cli-contracts	Affected =35.7.3	Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

The devplatform-cli-contracts npm package version 35.7.3 contains malicious code that automatically fetches and executes a platform-specific binary from external, non-publisher-controlled hosts upon import. This binary is saved under decoy filenames in temporary directories and executed detached from the main process. The malicious behavior includes reconstructing destination hostnames from split strings and uses DNS-TXT fallbacks. A cooldown marker prevents repeated execution during the same runtime.

Impact

This malicious package can lead to arbitrary code execution on the host system without user interaction beyond importing the package. The fetched binary is unverified and comes from attacker-controlled infrastructure, which could result in system compromise, data theft, or further malware deployment. Because the execution is detached and automatic, it can evade simple detection and persist unnoticed.

Defensive guidance

Users should avoid using devplatform-cli-contracts version 35.7.3 and remove it from their environments. Verify dependencies for supply chain integrity and consider replacing or auditing packages before use. Monitor for suspicious binaries in temporary directories and unexpected detached processes spawned by node modules.

Summary

The devplatform-cli-contracts package (npm) version 35.7.3 includes malicious code that triggers on require() by loading a compatibility script (_compat.js). This script reconstructs external hostnames from fragmented strings and fetches a platform-specific executable via HTTPS from infrastructure not owned by the package publisher. The fetched binary is saved to temporary directories with deceptive filenames, permissions are set to executable (chmod 0755), and it is spawned detached using a shell command. The execution chain is automatic and unverified, posing a risk of arbitrary code execution. A cooldown marker file (.analytics_state) suppresses repeated runs within the same environment.

References

npmjs.com/package/devplatform-cli-contracts/v/35.7.3 (opens in a new tab)

Community reviews

Loading reviews…

What to do

Affected software

Description

AI analysisMachine-generated, updated 5 Aug 2026, 16:29 UTC

Technical details

References

Community reviews