x402 SDK Security Advisory
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A security vulnerability exists in outdated versions of the x402 SDK.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
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | @x402/svm | < 2.6.0 | 2.6.0 |
| Python (PyPI) | x402 | < 2.3.0 | 2.3.0 |
References
- Weakness (CWE)
-- Platform
- npm, Python (PyPI)
- Package
@x402/svm, x402- Disclosed
- 07.03.2026
- Updated
- 11.10.2026 12:19
Sources and licenses
OSV / GitHub Advisory Database - GHSA-qr2g-p6q7-w82m - CC BY 4.0
Vulnerability history: x402
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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