fabdeploycheck (PyPI) · Malicious Code
Affects fabdeploycheckSource GCVE Database
Malicious package : remove fabdeploycheck and rotate any secrets on hosts that installed it.
Data as of 8 Nov 2026, 01:50 UTC
Malicious package
Published to PyPI · OSV MAL-2026-17926
What to do
Remove fabdeploycheck 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 |
|---|---|---|
| PyPIfabdeploycheck | Affected
| Fixed in– |
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Description
The fabdeploycheck package on PyPI contains malicious code that downloads a remote configuration and executes commands under attacker control. It establishes a reverse shell, allowing full command execution on the infected host. Additional capabilities include arbitrary file reads, process execution, TCP probing, and HTTP requests with stolen tokens. The package disables TLS verification when fetching commands, enabling man-in-the-middle attacks. It also kills processes related to previous implant versions to maintain persistence. This behavior constitutes a backdoor implant with data exfiltration and remote control capabilities.