← CVE Intelligence

CVE-2026-90467

aiosmtplib before 5.1.3 ESMTP Parameter Injection via unvalidated addresses PUBLISHED

Description (CNA)

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 angle brackets to append parameters like AUTH, NOTIFY, or ORCPT to envelope commands, forging authenticated identities or forcing delivery notifications to third parties.

Affected (CNA)

Vendor / productVersions
cole / aiosmtplibaffected 0 before 5.1.3; unaffected 5.1.3

CWE

CWE-88

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.