mpkg123 (PyPI) · Malicious Code
Affects mpkg123Source GCVE Database
Malicious package : remove mpkg123 and rotate any secrets on hosts that installed it.
Data as of 27 Oct 2026, 00:07 UTC
Malicious package
Published to PyPI · OSV MAL-2026-3426
What to do
Remove mpkg123 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 |
|---|---|---|
| PyPImpkg123 | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: kam193 (df9e0498d827adeb16ea11e4a1137133d2124f039942b776f7ac098a257cd164) If executed as a module, the obfuscated code collects and exfiltrates sensitive data, including passwords saved in a browser. --- Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers. Campaign: 2026-05-old-mpkg123 Reasons (based on the campaign): - infostealer - obfuscation - A Telegram webhook is used to send collected data. - exfiltration-browser-data