claims-handle-api-response (npm) · Malicious Code
Affects claims-handle-api-responseSource GCVE Database
Malicious package : remove claims-handle-api-response and rotate any secrets on hosts that installed it.
Data as of 5 Aug 2026, 16:12 UTC
Malicious package
Published to npm · OSV MAL-2026-12623
What to do
Remove claims-handle-api-response 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 |
|---|---|---|
| npmclaims-handle-api-response | Affected
| Fixed in– |
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Description
The npm package claims-handle-api-response version 35.4.9 contains malicious code that acts as a malware dropper. On loading, it downloads and executes opaque binaries from anonymous Cloudflare Workers hosts or, if that fails, via a DNS-TXT covert channel. The binaries are staged in temporary directories with disguised filenames and executed detached from the main process. This behavior is unrelated to the advertised REST client functionality and is characteristic of malware delivery infrastructure.