CVE-2026-63627

Katalog CVE

CVSS 6.9 · Medium EPSS 0,38%

Kerentanan Improper Input Validation. Skor CVSS 4.0 6.9 (Medium) menurut github.com.

Deskripsi (NVD)

mppx is a TypeScript interface for machine payments protocol. Prior to 0.8.2, FeePayerPolicy in src/tempo/internal/fee-payer.ts used decodeFunctionData to validate fee-sponsored calldata but did not reject trailing bytes. A client could append nonzero padding that increased intrinsic calldata gas while gas_limit and max_fee_per_gas remained within policy caps, causing the server fee_payer wallet to pay substantially more than the decoded transaction required. The tested 16 KB header limit bounded the demonstrated padding to about 5,500 bytes and produced approximately five times the normal transaction fee. This issue is fixed in version 0.8.2.

Rincian

Terbit di NVD

22 September 2026

Terakhir diubah

23 September 2026

Status NVD

Awaiting Analysis

CVSS 4.0

6.9 (Medium), sumber github.com
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-20: Improper Input Validation

EPSS (30 hari)

0,38% peluang dieksploitasi; lebih tinggi dari 30,5% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/wevm/mppx/commit/24ddcca719ae282977d8747309ed1275ea282b25
• https://github.com/wevm/mppx/pull/602
• https://github.com/wevm/mppx/releases/tag/mppx@0.8.2
• https://github.com/wevm/mppx/security/advisories/GHSA-727h-3vm5-qwq6