aiosmtplib has 2 CVEs on record. 2 were published in the last 90 days. The median CVSS is 5.9 (medium).
CVEs per month
Last 12 months, by publish date
1025/101125/111225/120126/010226/020326/030426/040526/050626/060726/070826/080926/09
- Exploited share
- 0% vs 1% corpus
- Median CVSS
- 5.9
- Publish → KEV
- —
- Last 90 days
- 2 prev 0
2
Total CVEs
0
Critical
0
CISA KEV
0
Exploited
aiosmtplib vulnerabilities
CVEs affecting aiosmtplib, newest first. Open any entry for full detail, references, and exploit status.
2 CVEsRSS
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…
▾ Sunlitaiosmtplib · aiosmtplibEPSS 0.26%via NVD
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…
▾ Sunlitaiosmtplib · aiosmtplibEPSS 0.39%via NVD