checkmarx-claude-cache (npm) · Malicious Code
Affects checkmarx-claude-cacheSource GCVE Database
Malicious package : remove checkmarx-claude-cache and rotate any secrets on hosts that installed it.
Data as of 10 Jul 2026, 13:05 UTC
Malicious package
Published to npm · OSV MAL-2026-6576
What to do
Remove checkmarx-claude-cache 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 |
|---|---|---|
| npmcheckmarx-claude-cache | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
The npm package 'checkmarx-claude-cache' version 1.0.0 is a malicious package impersonating Checkmarx and Anthropic's Claude product. When executed via the documented 'npx checkmarx-claude-cache' command, it fetches and executes code from a hardcoded, lookalike URL without verifying the content, running arbitrary code with the user's privileges. The package contains no legitimate functionality and uses brand impersonation to lure users into running it.