CVE-2026-61554
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| jm33-m0 | emp3r0r | < 4.2.5 | affected |
Weaknesses
- CWE-400: CWE-400: Uncontrolled Resource Consumption
References
- https://github.com/jm33-m0/emp3r0r/security/advisories/GHSA-4595-rvpx-4q34
- https://github.com/jm33-m0/emp3r0r/releases/tag/v4.2.5
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