Which versions of tabformerlite are malicious?

The following PyPI versions of tabformerlite are flagged malicious: 99.0.0. Treat any of these as compromised.

How do I remediate tabformerlite if I installed it?

tabformerlite is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

I already installed tabformerlite — how do I know if it already compromised me?

If tabformerlite was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

Is tabformerlite part of a known attack campaign?

Yes — tabformerlite is associated with the GENERIC-standard-pypi-install-pentest, GENERIC-hackerone-bugbounty campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find tabformerlite across my projects, lockfiles, and CI pipelines?

Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for tabformerlite (version 99.0.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging tabformerlite across your stack and pipelines.

Malicious package

tabformerlitePyPI

Malicious code in tabformerlite (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2026-1295

Immediate action

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

pip uninstall tabformerlite

What this malware does

Installing the package or importing the module exfiltrates basic information about the host, and the package has no other purpose.

Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities.

Campaign: GENERIC-standard-pypi-install-pentest

Reasons (based on the campaign):

The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.
The package overrides the install command in setup.py to execute malicious code during installation.

The OpenSSF Package Analysis project identified 'tabformerlite' @ 99.0.0 (pypi) as malicious.

It is considered malicious because:

The package communicates with a domain associated with malicious activity.

Malicious versions

1 flagged

99.0.0

Indicators of compromise (SHA-256)

1bb9649abbc3c57b35f0f247886a0b50587f752f3cf5707db3a57e85502d40f2

24a23931f60d9a2daf27a6df2eff2f3102cb239f6d058bed6646d208787f0c5b

e1be8118a3574a5be159d2890ee00434c3ae6a095721c505481b1fb83bdb6297

68db5f374ad25651b96d16e9b7cc851b39dffa78637106d501a446d04a94bc7b

Detection & response playbook

Credential / info stealer

Find it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for tabformerlite (version 99.0.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging tabformerlite across your stack and pipelines.
If you installed it — respond
tabformerlite is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If tabformerlite was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.
How O3 protects you
O3 blocks tabformerlite before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. tabformerlite on PyPI has been identified as a malicious package (version 99.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GENERIC-standard-pypi-install-pentestGENERIC-hackerone-bugbounty

References

bad-packages.kam193.eu

Credits

Kamil Mańkowski (kam193) · reporter
OpenSSF: Package Analysis · finder

Detect & block this

O3 blocks tabformerlite-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Malware detection Runtime egress monitoring