gt-tester-exp-profiler-exp-00000015

GHSA-p27c-f824-x9vw

Malicious code in gt-tester-exp-profiler-exp-00000015 (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 1.0.0`

## Source: amazon-inspector (55fc219f03cbaeeedb660ad423cc7af08ff1d29154c8b8989b7b0c5d7d5c3d75)
setup.py installs a.pth file containing `import gt_tester_exp_profiler_exp_00000015.probe; probe.run_probe()`, causing every Python interpreter start on the installer's machine to execute the package's probe module. The probe issues a plaintext HTTP GET to http://104.131.173.16/exp-<tag>-<hash16>, leaking the installer's source IP, interpreter-launch cadence, and a per-call hash to a hardcoded third-party host with no opt-in. Because.pth files auto-execute on every `python` invocation (not only when the package is imported), this constitutes installer-side persistence: the beacon fires for unrelated Python processes long after the user has forgotten the package is installed. The destination is a bare IPv4 address over cleartext HTTP with no integrity verification, so any future operator of that IP — or any on-path attacker — can serve arbitrary responses to the beacon. The User-Agent only references an opt-OUT URL, confirming the author knew consent was absent.

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/gt-tester-exp-profiler-exp-00000015/MAL-2026-4752.json))

**References:**
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/gt-tester-exp-profiler-exp-00000015/MAL-2026-4752.json
- https://pypi.org/project/gt-tester-exp-profiler-exp-00000015/1.0.0
- https://github.com/advisories/GHSA-p27c-f824-x9vw

Compromised versions (1)

= 1.0.0

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