$ cat writeup.md…
$ cat writeup.md…
hackadvisor
Task: SprintDeck project management platform with link preview feature that fetches URLs server-side with an IP blocklist. Solution: Bypass URL validation using IPv6-mapped IPv4 address [::ffff:127.0.0.1] to reach internal analytics service on port 3001 and exfiltrate flag via HTML title tag extraction.
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