{"id":"CVE-2026-61554","revision":"035e1e47f5224353be86084bbc12043e","records":[{"revision":"035e1e47f5224353be86084bbc12043e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-61554","aliases":[],"title":"emp3r0r has an unauthenticated HTTP Polling DoS","description":"emp3r0r is a C2 designed by Linux users for Linux environments. Prior to version 4.2.5, the `http_poll` C2 transport accepts attacker-controlled HTTP polling sessions before CBOR `MsgAuth` authentication is completed. A remote unauthenticated attacker can create arbitrary polling sessions and send request bodies that are forwarded into the C2 dispatch path. This can consume server resources and trigger pre-auth C2 processing. Version 4.2.5 patches the issue.","state":0,"publishedAt":"2026-09-15T20:48:05.156+00:00","modifiedAt":"2026-09-16T17:59:54.763+00:00","affected":[{"ecosystem":"Vendor product","name":"emp3r0r","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"jm33-m0\",\n                    \"product\": \"emp3r0r\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 4.2.5\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://github.com/jm33-m0/emp3r0r/security/advisories/GHSA-4595-rvpx-4q34","https://github.com/jm33-m0/emp3r0r/releases/tag/v4.2.5"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-61554","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-61554","identifiers":["CVE-2026-61554"]},"retained":false,"historicalAffected":[]}],"coverage":[]}