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aiosmtplib vulnerable to SMTP command injection via CR/LF in sender/recipient address

aiosmtplib vulnerable to SMTP command injection via CR/LF in sender/recipient address

CVE-2026-53533Published 1 month agoUpdated 3 weeks agoSource: OSV

Affected packages

  • aiosmtplibbefore 5.1.1

Exploit signal

Known exploited (CISA KEV)
No
EPSS score
EPSS percentile

EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.

aiosmtplib vulnerable to SMTP command injection via CR/LF in sender/recipient address | HackTribune