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x402 SDK Security Advisory

High
CarsonRoscoe published GHSA-qr2g-p6q7-w82m Mar 6, 2026

Package

npm @x402/svm (npm)

Affected versions

<2.6.0

Patched versions

>=2.6.0
gomod github.com/coinbase/x402/go (Go)
<2.5.0
>=2.5.0
pip x402 (pip)
<2.3.0
>=2.3.0

Description

Impact

A security vulnerability exists in outdated versions of the x402 SDK.

This vulnerability does not affect users' private keys, smart contracts, or funds.

The issue impacts resource servers accepting payments on Solana when the facilitator is running a vulnerable version of the x402 SDK.

Who Should Take Action

Facilitators that process payments on Solana must upgrade the x402 SDK to the patched versions listed below.

Clients are not required to upgrade.

Resource servers are not required to upgrade unless they operate their own facilitator (self-facilitate).

Patches

Please update to the following package versions:

  • Npm: @x402/svm >= 2.6.0
  • Pypi: x402 >= 2.3.0
  • Go: x402 >= 2.5.0

Severity

High

CVE ID

No known CVE

Weaknesses

No CWEs