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Today we are happy to announce the Nextcloud bug bounty program. We offer some of the highest bounties in the open source software industry, rewarding responsible disclosure with up to $5,000 for qualifying vulnerabilities!
We have partnered with the HackerOne platform because of its extraordinary popularity among IT security professionals. More than 3,000 hackers have reported over 24,000 bugs via the platform. Running a program on HackerOne allows us to quickly leverage the collective knowledge of a huge amount of these security experts.
“We are thrilled to welcome Nextcloud to the HackerOne community and have the opportunity to again work with Lukas Reschke”, said Marten Mickos, CEO of HackerOne. “Reschke’s experience with open source and running competitive bug bounty programs at scale is sure to benefit Nextcloud security and its customers.”
While we do perform internal research and add pro-active security hardenings all the time (a prominent example being the introduction of same-site cookies) we are always looking for external input as well. Few limitations and exclusions as well as some of the highest rewards in the open source world for responsible disclosure will serve to attract the kind of professional expertise needed to turn this into a success.
We’re confident in our code base and our work and with this project we will bring the Nextcloud security to an even higher level.
| Impact | Definition | Maximum possible reward |
| Critical | Gaining remote code execution on the server as unauthenticated user. (i.e. RCE) | $5,000 |
| High | Gaining access to complete user data of any other user. (i.e. Auth Bypass) | $2,000 |
| Medium | Limited disclosure of user data or attacks granting access to a single users’ user session. (i.e. XSS) | $750 |
| Low | Very limited disclosure of user data or attacks involving a very high unlikely amount of user interaction. | $250 |
Note that our websites (nextcloud.com and nextcloud.org) are NOT part of the program, only the software you can find on our install page.
Get started now at hackerone.com/nextcloud and help make Nextcloud even more awesome!
“When we have welcoming communities of contributors, open source software gets better and more useful to everyone.” Limor Fried, Electrical Engineer, Inventor and Founder of open-source hardware company Adafruit We believe in this ideal and love to work with our community. We are always looking to involve more people in Nextcloud, bringing in their ideas, […]
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