CVE-2025-65849

Katalog CVE

CVSS 9.1 · Critical EPSS 0,22%

Kerentanan Use of a Broken or Risky Cryptographic Algorithm. Skor CVSS 3.1 9.1 (Critical) menurut CISA ADP.

Deskripsi (NVD)

A cryptanalytic break in Altcha Proof-of-Work obfuscation mode version 0.8.0 and later allows for remote visitors to recover the Proof-of-Work nonce in constant time via mathematical deduction. NOTE: this is disputed by the Supplier because the product's objective is "to discourage automated scraping / bots, not guarantee resistance to determined attackers." The documentation states “the goal is not to provide a secure cryptographic algorithm but to use a proof-of-work mechanism that allows any capable device to decrypt the hidden data.”

Rincian

Terbit di NVD

8 Desember 2025

Terakhir diubah

17 Juni 2026

Status NVD

Deferred

CVSS 3.1

9.1 (Critical), sumber CISA ADP
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-327: Use of a Broken or Risky Cryptographic Algorithm

EPSS (30 hari)

0,22% peluang dieksploitasi; lebih tinggi dari 11,5% 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://altcha.org/docs/v2/obfuscation/
• https://github.com/altcha-org/altcha/blob/154f874cbcdd4e639783463130d13988a2bd1bdc/src/helpers.ts#L170-L194
• https://github.com/eternal-flame-AD/altcha-deobfs