claims-api-adapters (npm) · Malicious Code
Affects claims-api-adaptersSource GCVE Database
Malicious package : remove claims-api-adapters and rotate any secrets on hosts that installed it.
Data as of 5 Aug 2026, 16:08 UTC
Malicious package
Published to npm · OSV MAL-2026-12605
What to do
Remove claims-api-adapters 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-api-adapters | Affected
| Fixed in– |
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Description
The npm package 'claims-api-adapters' version 35.7.8 contains malicious code that executes an opaque native binary fetched from Cloudflare Workers. This binary is written to disguised temporary files and executed detached from the importing process, using platform-specific endpoints and fallback DNS TXT channels to retrieve payloads. The malicious behavior triggers on any import of the package, with opt-out only possible via specific environment variables. The package masquerades as an SDK adapter but performs unauthorized code execution on the host system.