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e9918dcb22
- Added daisy.ns.cloudflare.com and rocco.ns.cloudflare.com to Cloudflare guide. - Unified domain name to lengkundee01.org in CNAME and PWA guide. - Verified active domain using dig. - Updated sentinel journal with documentation learnings.
10 lines
972 B
Markdown
10 lines
972 B
Markdown
# Sentinel's Journal
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## 2026-02-07 - Telegram Bot Authorization Bypass
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**Vulnerability:** The Telegram Deployment Bot (`scripts/telegram_deploy_bot.py`) contained a "Fail Open" vulnerability where omitting the `TELEGRAM_ALLOWED_USER_IDS` environment variable resulted in granting access to *all* Telegram users instead of *none*.
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**Learning:** Security controls must default to deny (Fail Closed). Implicitly allowing access when configuration is missing creates silent vulnerabilities that are hard to detect until exploited.
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**Prevention:** Ensure all authorization checks explicitly return `False` or throw an exception if the access control list is empty or undefined. Never default to `True` in security-critical paths.
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## 2026-02-13 - [Documentation] Cloudflare Nameservers and Domain Unification
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- Updated Cloudflare nameservers to daisy.ns.cloudflare.com and rocco.ns.cloudflare.com.
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- Unified domain name to lengkundee01.org across CNAME and PWA documentation.
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