
One Empty Header to Admin: How an Auth Bypass Breaks OpenBullet2
From Cybersecurity Tech Brief By HackerNoon by HackerNoon
June 7, 2026 · 9 min
About this episode
The episode discusses five vulnerabilities in OpenBullet2, including an authentication bypass and various security risks.
This story was originally published on HackerNoon at: https://hackernoon.com/one-empty-header-to-admin-how-an-auth-bypass-breaks-openbullet2 . Five vulnerabilities in OpenBullet2: an empty API key, path traversal, RCE, and an NTLM hash leak. Check more stories related to cybersecurity at: https://hackernoon.com/c/cybersecurity . You can also check exclusive content about #ethical-hacking , #rce , #exploit , #openbullet2 , #what-is-openbullet2 , #openbullet2-explained , #vulnerabilities , #cybersecurity-awareness , and more. This story was written by: @vognik . Learn more about this writer by checking @vognik's about page, and for more stories, please visit hackernoon.com . This article walks through 5 CVEs: an empty X-Api-Key header that bypasses authentication by default, arbitrary C# and script-file execution, a wordlist path traversal granting arbitrary file read/write/delete as root, and an NTLMv2 hash leak on Windows.
Topics covered
- cybersecurity
- vulnerabilities
- authentication bypass
- OpenBullet2
- ethical hacking
Keywords
- OpenBullet2
- auth bypass
- vulnerabilities
- RCE
- NTLM hash leak
Mentioned in this episode
Organizations: HackerNoon
Products: OpenBullet2
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