GoPlus Security Audit Flags Key Risks in x402 Crypto Projects

GoPlus Security’s audit of more than 30 x402 projects revealed that high-risk vulnerabilities are widespread across the ecosystem.

GoPlus Security Audit Flags Key Risks in x402 Crypto Projects

Key Highlights

A new security report has raised concerns about the fast-expanding x402 ecosystem, a collection of cryptocurrency projects built around an attempt to revive a long-ignored part of the early internet: the HTTP 402 “Payment Required” status code.

The idea behind x402 is simple on paper. When the web was originally designed, HTTP 402 was intended to signal that a user must pay before accessing a resource. The code was never widely implemented, but developers in the crypto sector have revived the concept to enable automated payments at the protocol level. 

Over the past several months, dozens of projects have adopted the 402 theme, from basic tokens to cross-chain payment tools.

As interest grew—boosted by mentions from major tech and crypto companies—so did speculation. Many of the newest additions to the ecosystem are meme-style tokens launched quickly to capitalize on the trend, often without basic security checks.

Now, GoPlus Security, a blockchain security company known for running automated risk-scanning services and wallet-level security tools, has published a review of more than 30 x402-related projects. The company says the goal of the scan was to map out the types of risks appearing repeatedly as the ecosystem expands.

What GoPlus found

GoPlus used its internal AI-assisted auditing engine to examine x402 projects listed in the x402 sections of Binance Wallet, OKX Wallet, and community-flagged lists. According to the company, the majority of projects scanned showed at least one high-risk issue.

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