ensy.zip

Hi! I'm ensy [Sean Ng], a programmer and CTF player from Hong Kong o/
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About

I'm a secondary school student who's interested in all things programming.

CTF player for Black Bauhinia, and have done independent security research.
Also enjoys being a hobbyist full stack developer and competitive programmer.

CVE

CVE-2025-23207 KaTeX GHSA-cg87-wmx4-v546
CVE-2025-26791 DOMPurify NVD Write-up
CVE-2025-27108 DOM Expressions GHSA-hw62-58pr-7wc5 Write-up
CVE-2025-27109 SolidJS GHSA-3qxh-p7jc-5xh6 Write-up
CVE-2025-22872 golang/net GO-2025-3595
CVE-2025-29049 MathLive GHSA-qwj6-q94f-8425
CVE-2025-47777 5ire GHSA-mr8w-mmvv-6hq8

Results

  • First place - NuttyShell CTF 2025 Secondary Division
  • Finalist - First International Cybersecurity Olympiad (Result TBD)
  • Finals & 1st place in heats - HKCERT CTF 2024 Secondary Division
  • Silver - Hong Kong Olympiad in Informatics Junior 2024
  • 8th Individual - AlpacaHack Round 2 (Web)
  • First place - NuttyShell CTF 2024 Secondary Division
  • Second place - HKCERT CTF 2023 Secondary Division