GHSA-FV2F-RW9F-V9CM smtp-server's command parser memory exhaustion denial-of-service

smtp-server prior to v3.18.3 are vulnerable to unauthenticated memory exhaustion denial-of-service. smtp-server's command parser allows any remote client to consume server memory by sending data without newline characters. The server's remainder buffer in SMTPStream.write grows without limit,...

Allocation of Resources Without Limits or Throttling

Overview smtp-server is a Create custom SMTP servers on the fly Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling through the SMTPStream.write process. An attacker can cause excessive memory consumption and potentially crash the server by...

BIT-LIBPYTHON-2025-15282 Header injection via newlines in data URL mediatype

User-controlled data URLs parsed by urllib.request.DataHandler allow injecting headers through newlines in the data URL mediatype...