[Bug] Anthropic API Safety Filter: Unauthorized Model Substitution Without User Consent

Status Open
Reported on v2.1.211
Maintainer reply None cached
Activity 0 comments · opened Jul 16, 2026

Bug Description
Fable 5 safeguards flagged a routine session-reflection summary of defensive work on my own hardware — OOM forensics (kernel log analysis, process kill lists), hook timeout auditing, and notes on a publicly reported third-party CLI exfiltration incident. This is ordinary sysadmin/incident-response vocabulary, exactly the "routine coding/cybersecurity work" your notice admits gets over-flagged. Two issues: (1) the false positive itself — defensive analysis of one's own machines should not trip dual-use filters; (2) the response to the flag was worse than the flag — the session was silently switched to a different model (Opus 4.8), overriding my explicitly set model preference without consent or confirmation. Flag and pause if you must, but never substitute models mid-session without asking. The user should choose the fallback, not the filter.

Environment Info

  • Platform: linux
  • Terminal: gnome-terminal
  • Version: 2.1.211
  • Feedback ID: a2783a00-7c8b-456c-9e45-c2436867efdf

Errors

[]

View original on GitHub ↗