CVE-2026-85695 — FastChat Unauthenticated Worker Registration SSRF and Model Spoofing
FastChat contains an authentication bypass vulnerability in the /register_worker endpoint that allows unauthenticated attackers to register arbitrary worker addresses and perfor…
Published: 2026-09-04 · CVSS: 9.3 · CVSS 4.0
FastChat contains an authentication bypass vulnerability in the /register_worker endpoint that allows unauthenticated attackers to register arbitrary worker addresses and perform server-side request forgery. Attackers can register malicious workers under victim model names to intercept user prompts, images, and responses, or probe internal network ports across the worker mesh.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7