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.
Metrics
Affected Vendors & Products
References
History
Mon, 14 Sep 2026 21:00:00 +0000
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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Sun, 13 Sep 2026 06:00:00 +0000
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| First Time appeared |
Cole
Cole aiosmtplib |
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| Vendors & Products |
Cole
Cole aiosmtplib |
Sat, 12 Sep 2026 02:00:00 +0000
| Type | Values Removed | Values Added |
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| Description | 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. | |
| Title | aiosmtplib before 5.1.3 ESMTP Parameter Injection via unvalidated addresses | |
| Weaknesses | CWE-88 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-09-12T01:50:34.534Z
Updated: 2026-09-14T18:17:05.398Z
Reserved: 2026-09-11T23:36:20.310Z
Link: CVE-2026-90467
Updated: 2026-09-14T16:14:46.987Z
Status : Deferred
Published: 2026-09-12T02:16:24.770
Modified: 2026-09-23T17:17:44.240
Link: CVE-2026-90467
No data.