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cve.nowby Sazabi
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npmPackage

altcha

1 known vulnerability (1 critical), with the versions each affects and the releases that fix them.

Latest release
3.5.0 (Oct 22, 2026): no advisory affects it
Newest unaffected release
3.5.0 (Oct 22, 2026), the latest release
Advisories
1 · 1 critical
Weekly downloads
271K
Dependents
16
Releases
110 since 0.1.0 (Nov 18, 2023)
Registry
npm
Releases read
Nov 8, 2026

Version timeline

Every release cve.now has on record, lowest version on the left; each bar is a run of versions an advisory affects.

Advisories 1

  • CVE-2025-65849Critical 9.1

    A cryptanalytic break in Altcha Proof-of-Work obfuscation mode version 0.8.0 and later allows for remote visitors to recover the…

    Affected: from 0.8.0, through 2.2.4.

    Fixed in 2.3.0 (released Dec 18, 2025, 10 days after disclosure), the first release outside every affected range (no listed fixed version clears them all).

    The latest release, 3.5.0, is not affected.

    4.8% of altcha downloads last week were affected versions (15.4K).