CVE-2026-73567

Katalog CVE

CVSS 9.1 · Critical EPSS 0,44%

Kerentanan Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG). Skor CVSS 3.1 9.1 (Critical) menurut github.com.

Deskripsi (NVD)

sm-crypto provides JavaScript implementations of the Chinese cryptographic algorithms SM2, SM3, and SM4. Prior to 0.5.0, the default no-argument sm2.generateKeyPairHex() path in Node.js uses the module-wide SecureRandom instance in src/sm2/utils.js, supplied by jsbn@1.1.0, which seeds an ARC4 stream from Math.random() and new Date().getTime() because window.crypto.getRandomValues is unavailable even though globalThis.crypto exists. An attacker who can observe the process's Math.random() outputs and estimate the key-generation time can reconstruct the seed, recover generated SM2 private keys, and predict signing ephemeral scalars used to forge signatures. This issue is fixed in version 0.5.0.

Rincian

Terbit di NVD

13 Agustus 2026

Terakhir diubah

18 September 2026

Status NVD

Deferred

CVSS 3.1

9.1 (Critical), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-338: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

EPSS (30 hari)

0,44% peluang dieksploitasi; lebih tinggi dari 36,7% 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/JuneAndGreen/sm-crypto/commit/1f9bd7bd160c24efd9c26c8f7fda997c68c823d0
• https://github.com/JuneAndGreen/sm-crypto/security/advisories/GHSA-vh45-f885-3848