Kenta Ishizaki 55728

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Working from home

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@doorkeeper-gem Member

1 follower · 2 following

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1 security advisory credit

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Overview Repositories 6 Projects Packages Stars 5

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55728/README.md

Kenta Ishizaki

石﨑健太

Freelance Rails Engineer · OSS Contributor

An engineer who reads the source, finds the bug, and sends the patch.

Currently

Freelance Rails Engineer — full-stack development on a B2B SaaS platform.

OSS highlights

doorkeeper-gem Org Member

doorkeeper-openid_connect — lead releases since v1.10.0
🛡️ CVE-2026-44476 Finder — GHSA-m6vc-f87m-cc2h
- Dynamic Client Registration bypass
🛡️ CVE-2026-70665 Finder — GHSA-8r7r-wh7x-27ff
- DCR endpoint persists unvalidated client-supplied scopes
Contributing across doorkeeper, doorkeeper-openid_connect, doorkeeper-jwt, and doorkeeper-i18n

All Time #58 · 281 commits (as of Aug 29, 2026) · top ~1% of all-time contributors

Merged across 7+ sub-frameworks: Active Record, Active Support, Action View, Action Cable, Action Mailer, Action Pack, Action Job
Featured in This Week in Rails

📌 Notable PRs

#56872 Add start_day argument to this_week? — new API for multi-tenant week-start consistency
#57245 Fix find_signed for composite primary key models — prior-art gap in CPK support
#58139 Harden load_schema_migrations — CRLF resilience & duplicate version dedup