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Advisory record · GHSA-6gvq-jcmp-8959

ALTCHA Proof-of-Work Vulnerable to Challenge Splicing and Replay

CVSS 6.5 MediumEPSS 0.0046 · 40th percentile

Published by the GitHub Advisory Database at 16 Dec 2025, 00:43 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
altcha-libnpm<1.4.11.4.1
altcha-org/altchaPackagist<1.3.11.3.1
github.com/altcha-org/altcha-lib-goGo<1.0.01.0.0
org.altcha:altchaMaven<1.3.01.3.0
altchaRubyGems<1.0.01.0.0
altchaPyPI<1.0.01.0.0
altchaHex<1.0.01.0.0
Identifiers
GHSA-6gvq-jcmp-8959 · CVE-2025-68113 · GO-2025-4239 · PKSA-5rb8-j658-qvzz · PYSEC-2026-1115
Weakness (CWE)
CWE-115 · CWE-347
Tags
Published
16 Dec 2025
Updated
10 Sept 2026

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
6.5 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0046, the 40th percentile, on 5 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 16 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.