CVE-2026-33471

Katalog CVE

CVSS 9.6 · Critical EPSS 0,29%

Kerentanan Improper Input Validation pada nimiq proof-of-stake. Skor CVSS 3.1 9.6 (Critical) menurut github.com.

Deskripsi (NVD)

nimiq-block contains block primitives to be used in Nimiq's Rust implementation. `SkipBlockProof::verify` computes its quorum check using `BitSet.len()`, then iterates `BitSet` indices and casts each `usize` index to `u16` (`slot as u16`) for slot lookup. Prior to version 1.3.0, if an attacker can get a `SkipBlockProof` verified where `MultiSignature.signers` contains out-of-range indices spaced by 65536, these indices inflate `len()` but collide onto the same in-range `u16` slot during aggregation. This makes it possible for a malicious validator with far fewer than `2f+1` real signer slots to pass skip block proof verification by multiplying a single BLS signature by the same factor. The patch for this vulnerability is included as part of v1.3.0. No known workarounds are available.

Rincian

Terbit di NVD

22 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-20: Improper Input Validation
CWE-190: Integer Overflow or Wraparound
CWE-345: Insufficient Verification of Data Authenticity
CWE-1284: Improper Validation of Specified Quantity in Input

EPSS (30 hari)

0,29% peluang dieksploitasi; lebih tinggi dari 20,1% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-6973-8887-87ff patch · advisory vendor
• https://github.com/nimiq/core-rs-albatross/commit/d02059053181ed8ddad6b59a0adfd661ef5cd823 patch
• https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0 release notes