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Malicious code in anthropic-sdk (PyPI)

Malware Published Oct 4, 2026 to the GitHub Advisory Database • Updated Oct 5, 2026

Package

pip anthropic-sdk (pip)

Affected versions

= 0.1.0

Patched versions

None

Description

Source: kam193 (6844e60d4a58dd11040255e8d632bcca66ae02b1048674e79bddbac1b337f442)

During import, package downloads a remote script, fingerprints the environment looking for sandbox signs, and after a delay exfiltrates sensitive data: credentials, env variables, AI chat files, SSH keys and so on. If exfiltration via HTTPS fails, it attempts DNS-based exfiltration. Additionally, package uses DNS to centrally hold execution.


Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2026-10-anthropic-sdk

Reasons (based on the campaign):

  • impersonation

  • Downloads and executes a remote malicious script.

  • The package contains code to detect if it is running in a sandbox environment.

  • obfuscation

  • exfiltration-credentials

  • files-exfiltration

  • exfiltration-env-variables

  • exfiltration-ssh-keys


Credit: OpenSSF (source)

References

Published to the GitHub Advisory Database Oct 4, 2026
Reviewed Oct 4, 2026
Last updated Oct 5, 2026

EPSS score

Weaknesses

Embedded Malicious Code

The product contains code that appears to be malicious in nature. Learn more on MITRE.

GHSA ID

GHSA-xxp4-7566-29xj

Source code

No known source code
Improvements are not currently accepted on this advisory because this package is malware and has no patched versions. If there is something to change, please open an issue at https://github.com/github/advisory-database/issues.