Security Bug Report - Unauthenticated setup-wizard hash fixation mints and exfiltrates victim organization auth tokens

A new security bug report has been reported by the bug bounty program.

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## Claude Analysis Result

**Possible code path of the root cause:** `/src/sentry/api/endpoints/setup_wizard.py`
**Possible reason:** The report explicitly targets the setup-wizard flow, specifically the endpoints `GET /api/0/wizard/` and `GET /api/0/wizard//`, as well as the frontend page `/settings/wizard//`. The CODEOWNERS file has two explicit entries for these: `/src/sentry/web/frontend/setup_wizard.py @getsentry/team-javascript-sdks` and `/src/sentry/api/endpoints/setup_wizard.py @getsentry/team-javascript-sdks`. The vulnerability is entirely within the setup wizard's hash allocation, cache population, and token leakage logic, which maps directly to these files owned by team-javascript-sdks.
**Possible owner:** `@getsentry/team-javascript-sdks`

**Confidence score:** 95

\*\* If you believe the issue is incorrectly assigned, please assign it to the correct team or let the security team know. Thank you!\*\*

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To reduce risk of accidental information disclosure, we are intentionally not exposing full vulnerability details here
Please see the parent ticket for the full report: VULN-1424