Which versions of claimora are malicious?

The following npm versions of claimora are flagged malicious: 1.0.4. Treat any of these as compromised.

How do I remediate claimora if I installed it?

Remove claimora from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound network activity or persistence. Use O3 Security's dependency scanner to confirm the package and its artifacts are fully purged across your stack.

Is claimora part of a known attack campaign?

Yes — claimora is associated with the IN-MAL-2026-005704, IN-MAL-2026-005705 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

Can O3 Security detect claimora in my codebase?

Yes. O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, blocking claimora and packages like it before any post-install script runs.

Malicious package

claimoranpm

Malicious code in claimora (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-5608

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall claimora

What this malware does

claimora impersonates the jsonwebtoken library (auth0): package.json sets author to "auth0", points repository at a non-existent github.com/auth0/node-claimora, and re-exports the jsonwebtoken API surface (sign/verify/decode plus JsonWebTokenError/NotBeforeError/TokenExpiredError). README and LICENSE text are copied from node-jsonwebtoken. The main entry index.js loads decode.js, which at module top level invokes getThirdCookie() — this issues an axios GET to https://jsonkeeper.com/b/0GXBD, takes response.data.errCode (attacker-controlled JavaScript on a mutable public paste service), constructs new Function.constructor("require", errCode), and invokes the resulting handler with require. Any process that requires claimora executes whatever code the operator of that paste currently serves, with full Node module access (filesystem, network, child_process, env). The legitimate jsonwebtoken library performs zero network I/O; this clone adds a remote-fetch-and-eval path executed unconditionally on import.

Malicious versions

1 flagged

1.0.4

Indicators of compromise (SHA-256)

1b785b842f24aeae0e20157784b17a8bff7003e72575ac9a3aa9cbeb550a5c92

5072f0c8720be41c60a0246459f7cde79dd300af7aa0b04e7223836a99c201a7

Frequently asked questions

No. claimora on npm has been identified as a malicious package (version 1.0.4 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-005704IN-MAL-2026-005705

References

npmjs.com

Credits

Amazon Inspector · finder

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O3 Security blocks malicious packages like this at install time and in CI.

Supply-chain protection