GHSA-mpmc-qchh-r9q8Published

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…

cve-program · CVE-2025-65849

Published

n/a

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "n/a",
                    "product": "n/a",
                    "versions": [
                        {
                            "version": "n/a",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

euvd · EUVD-2025-201806

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Dec 8, 2025, 12:00:00 AM

dateUpdated: Dec 11, 2025, 2:36:52 PM

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

nvd · CVE-2025-65849

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Deferred

Weakness classifications: CWE-327

Original publisher date fields

published: 2025-12-08T19:15:50.817

lastModified: 2026-10-18T15:10:00.097

Original source record · Cite this exact observation · Complete original publisher JSON

osv · GHSA-mpmc-qchh-r9q8

Published

altcha

npm

SEMVER · introduced 0.8.0 → last_affected 2.2.4

Original source record · Cite this exact observation · Complete original publisher JSON