Case Study · Security
XION Protocol
Helping a US-based blockchain protocol stay safe for the people who use it.
- Client
- XION Protocol (USA)
- Scope
- Security research, responsible disclosure
- Status
- Fixed & acknowledged
- Year
- 2025
Context
XION is a public blockchain serving users across the United States. Like every protocol of its scale, the network depends on independent security review to harden the chain before issues reach production.
What we found
We identified a critical flaw in XION's fee enforcement that could have allowed bad actors to consume unlimited network resources without paying for them. Left unfixed, the issue would have undermined the chain's economic security and opened the door to denial-of-service attacks against the entire network.
How we worked
We delivered a detailed report with full reproduction steps and a working proof of concept, then worked directly with the XION team to confirm the impact, agree on severity, and propose a precise fix that closes the gap without affecting how the network handles legitimate transactions.
Outcome
XION confirmed the vulnerability and acknowledged the work in May 2025. The fix shipped, the chain runs more resiliently, and the public report stands as a reference for future security work on the protocol.