CVE-2026-90467

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...

Threat Outbreak Alert RuleID30112: Email Messages Distributing Malicious Software on August 7, 2017

Medium Alert ID: 54776 First Published: 2017 August 7 19:28 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages distributing malicious software. Email messages that are related to this threat RuleID30112 may contain the following files: Name | Si...

Threat Outbreak Alert RuleID18331: Email Messages Distributing Malicious Software on September 29, 2015

Medium Alert ID: 41261 First Published: 2015 September 29 16:09 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages distributing malicious software. Email messages that are related to this threat RuleID18331 may contain the following files: Name ...

Threat Outbreak Alert RuleID17185: Email Messages Distributing Malicious Software on August 05, 2015

Medium Alert ID: 40329 First Published: 2015 August 5 20:20 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages distributing malicious software. Email messages that are related to this threat RuleID17185 may contain the following files: Name | Si...

Threat Outbreak Alert RuleID16840: Email Messages Distributing Malicious Software on July 22, 2015

Medium Alert ID: 40107 First Published: 2015 July 23 19:14 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages distributing malicious software. Email messages that are related to this threat RuleID16840 may contain the following files: Name | Siz...

Threat Outbreak Alert RuleID11617: Email Messages Distributing Malicious Software on September 21, 2014

Medium Alert ID: 35782 First Published: 2014 September 22 15:03 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages distributing malicious software. Email messages that are related to this threat RuleID11617 may contain the following files: Name ...

Threat Outbreak Alert: Fake Failed Package Delivery Notification Email Messages on May 19, 2014

Medium Alert ID: 34276 First Published: 2014 May 19 20:15 GMT Version: 1 Summary Cisco Security has detected significant activity related to German-language spam email messages that claim to contain a package failure notice for the recipient. The text in the email message attempts to convince the...

Threat Outbreak Alert: Fake Failed Delivery Notification Email Messages on February 17, 2014

Medium Alert ID: 32895 First Published: 2014 February 17 21:15 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages that claim to contain a failed delivery notification for the recipient. The text in the email message attempts to convince the...

Threat Outbreak Alert: Fake Failed Delivery Notification Email Messages on November 5, 2013

Medium Alert ID: 31637 First Published: 2013 November 5 19:25 GMT Last Updated: 2013 November 6 15:52 GMT Version: 2 Summary Cisco Security has detected significant activity related to Italian-language spam email messages that claim to contain a failed delivery notification for the recipient. The...

Threat Outbreak Alert: Fake Fax Delivery Notification Email Messages on October 30, 2013

Medium Alert ID: 31555 First Published: 2013 October 30 19:22 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages that claim to contain a fax notification for the recipient. The text in the email message attempts to convince the recipient to open...

Threat Outbreak Alert: Fake Missed Delivery Notification Email Messages on October 17, 2013

Medium Alert ID: 31326 First Published: 2013 October 17 18:06 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages that claim to contain a failed delivery attempt notification for the recipient. The text in the email message attempts to convince t...