Cleartext Transmission of Sensitive Information Affecting std/net/smtp package, versions >=1.1.0-0 <1.8.4>=1.9.0-0 <1.9.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-STDNETSMTP-14548572
- published6 Jan 2026
- disclosed7 Jan 2022
- creditStevie Johnstone
Introduced: 7 Jan 2022
CVE-2017-15042 (opens in a new tab)How to fix?
Upgrade std/net/smtp to version 1.8.4, 1.9.1 or higher.
Overview
std/net/smtp is a Go standard library package std/net/smtp
Affected versions of this package are vulnerable to Cleartext Transmission of Sensitive Information.
Go Vulnerability Report:
SMTP clients using net/smtp can use the PLAIN authentication scheme on network connections not secured with TLS, exposing passwords to man-in-the-middle SMTP servers.