devplatform-react-query-s3-client (npm) · Malicious Code
Affects devplatform-react-query-s3-clientSource GCVE Database
Malicious package : remove devplatform-react-query-s3-client and rotate any secrets on hosts that installed it.
Data as of 5 Aug 2026, 16:37 UTC
Malicious package
Published to npm · OSV MAL-2026-12739
What to do
Remove devplatform-react-query-s3-client 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-react-query-s3-client | Affected
| Fixed in– |
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Description
The npm package devplatform-react-query-s3-client version 35.8.7 contains malicious code that downloads and executes platform-specific binary payloads from obfuscated and suspicious Cloudflare Workers hosts and fallback domains. The payload is saved under deceptive filenames in temporary directories and executed detached from the main process. The package includes telemetry evasion techniques and disguises its network destinations to avoid detection. This malicious behavior is unrelated to any legitimate S3 or React Query SDK functionality.