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What a disclosed x402 SDK flaw looks like on Base, measured

This story is from 2026-10-24. It is preserved in the archive; the latest stories are on the live feed.

On 22 October 2026 the security firm V12 reported that the x402 client SDKs, before version 2.23.0, signed whatever amount a 402 response asked for. The default client had no spending limit, so a hostile API could turn a routine request into a request for the wallet's full balance of a supported to…

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  1. 2026-10-24 09:35 · DEV Community — AI
    What a disclosed x402 SDK flaw looks like on Base, measured

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