textwrap-formatter

GHSA-9c25-vc4q-5g8h

Malicious code in textwrap-formatter (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 1.2.4`

## Source: kam193 (18da24e92fd40457ad3df2af568c07d41b35f44e6e07e8fac3bf0eafba9c2154)
During installation, obfuscated code exfiltrates cryptocurrency wallet data to a hardcoded location and places a backdoor through a new authorized SSH key. Information about the placed backdoor is sent back to the attacker, and sshd configuration is adjusted to ensure the successful remote connection.


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


Campaign: 2026-05-ninja-core-utils


Reasons (based on the campaign):


 - The package overrides the install command in setup.py to execute malicious code during installation.


 - obfuscation


 - crypto-related


 - exfiltration-crypto


 - backdoor

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/textwrap-formatter/MAL-2026-3403.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/textwrap-formatter
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/textwrap-formatter/MAL-2026-3403.json
- https://github.com/advisories/GHSA-9c25-vc4q-5g8h

Compromised versions (1)

= 1.2.4

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.