CVE-2026-85695
Critical · 9.4CVSS
9.4
EPSS
0.7%
Published
Sep 4, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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