btcflx has 1 version on PyPI flagged in 1 incident we track. Other versions of this package are not implicated - only the exact versions listed below were named by the source advisories.
Affected versions
Check what you actually have installed with pip show btcflx.
11 PyPI CWE-506 advisories published 2026-08-09..2026-08-11 across four named campaigns: 2026-08-neutrl-core hides credential theft in an intentional malicious dependency (fake backdated GitHub history); 2026-08-kotanku ships four Telegram-bot cryptocurrency-wallet-file exfiltrators (kotanku, kotoraka, btcflx, btcflip); 2025-11-spellcheckers multi-stage RCE lands as pytablute; chaintest is a DPRK "Contagious Interview"-adjacent full-spectrum stealer.
Versions named here: 0.1.0
What to do if you installed one of these
Treat the machine as compromised rather than simply upgrading. Packages in these incidents typically execute at install time, so the payload has already run with whatever credentials were in the environment.
1.Rotate every credential that machine or CI job could reach - registry tokens, cloud keys, SSH keys, CI secrets - from a different machine.
2.Pin to a version not listed above, then reinstall from a clean lockfile.
3.Clear caches and private mirrors. Artifactory, Nexus, Verdaccio, and devpi routinely keep serving a tarball after the public registry has pulled it.
4.Read the incident write-up above - recommended actions differ per incident, and some have specific indicators of compromise worth grepping your logs for.
Check your whole project
btcflx is one of many packages in these incidents, and it is usually pulled in as a transitive dependency rather than one you installed directly. Paste your requirements.txt to check every dependency at once - it runs in your browser and nothing is uploaded.
Version data comes from the public advisories cited on each incident page. We list only versions those advisories name - we don't infer additional ones. Think this is wrong or incomplete? Tell us.
