CVE-2025-61725: Go Standard Library Net/mail

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

The ParseAddress function constructs domain-literal address components through repeated string concatenation. When parsing large domain-literal components, this can cause excessive CPU consumption.

Affected products

• Go Standard Library Net/mail: before 1.24.8 (fixed in 1.24.8); from 1.25.0, before 1.25.2 (fixed in 1.25.2)

Published 2025-10-29. Last modified 2026-10-08.