aiosmtplib vulnerabilities
CVEs whose affected-version data names the aiosmtplib package (pip). Each record lists the affected and patched versions; check a specific version with the dependency checker or POST /api/sbom.
3 CVEsRSS
CVE-2026-90467Medium· 4.0aiosmtplib before 5.1.3 fails to properly validate email addresses supplied by callers, allowing attackers to inject ESMTP parameters into MAIL FROM and RCPT TO command lines
aiosmtplib before 5.1.3 fails to properly validate email addresses supplied by callers, allowing attackers to inject ESMTP parameters into MAIL FROM and RCPT TO command lines. Attackers can craft malicious addresses containing spaces and…
CVE-2026-55558Medium· 5.9aiosmtplib is an asynchronous SMTP client for use with asyncio
aiosmtplib is an asynchronous SMTP client for use with asyncio. Prior to 5.1.2, SMTPProtocol.start_tls in src/aiosmtplib/protocol.py consumes the server's 220 response and starts the TLS handshake without clearing SMTPProtocol._buffer. A…
CVE-2026-53533Mediumaiosmtplib is an asynchronous SMTP client for use with asyncio
aiosmtplib is an asynchronous SMTP client for use with asyncio. Prior to 5.1.1, SMTP.mail(), SMTP.rcpt(), SMTP.vrfy(), and SMTP.expn() send caller-supplied addresses without rejecting embedded CR or LF bytes. Data after the line break is…