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Advisory record · GHSA-mpmc-qchh-r9q8

Altcha Proof-of-Work obfuscation mode cryptanalytic break

CVSS 9.1 CriticalCriticalEPSS 0.0024 · 14th percentile

Critical, because:

  • CVSS score 9.1: 9.0 or more.

How we decide what’s critical

Published by the GitHub Advisory Database at 8 Dec 2025, 21:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
altchanpm>=0.8.0, <=2.2.4No fixed version yet
Identifiers
GHSA-mpmc-qchh-r9q8 · CVE-2025-65849
Weakness (CWE)
CWE-327
Tags
Published
8 Dec 2025
Updated
12 Dec 2025

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
9.1 Critical 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N ADP (CISA-ADP)
  • CISA KEV Not listed.
  • EPSS 0.0024, the 14th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the GitHub Advisory Database, published 8 Dec 2025. New records show when each source confirmed them.

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.