EUVD-2026-24266Published

Zebra: Cached Mempool Verification Bypasses Consensus Rules for Ahead-of-Tip Blocks

cve-program · CVE-2026-40880

Published

zebrad

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "ZcashFoundation",
                    "product": "zebrad",
                    "versions": [
                        {
                            "version": "< 4.3.1",
                            "status": "affected"
                        }
                    ]
                }

zebra-consensus

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "ZcashFoundation",
                    "product": "zebra-consensus",
                    "versions": [
                        {
                            "version": "< 5.0.2",
                            "status": "affected"
                        }
                    ]
                }

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

euvd · EUVD-2026-24266

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: Apr 21, 2026, 7:18:22 PM

dateUpdated: Apr 21, 2026, 7:52:58 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-2026-40880

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: Analyzed

Weakness classifications: CWE-1025

Original publisher date fields

published: 2026-04-21T20:17:01.687

lastModified: 2026-10-26T21:10:00.170

2 source CPE criteria · context only

cpe:2.3:a:zfnd:zebra-consensus:*:*:*:*:*:rust:*:*
cpe:2.3:a:zfnd:zebrad:*:*:*:*:*:rust:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

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

osv · GHSA-xvj8-ph7x-65gf

Published

zebra-consensus

crates.io

SEMVER · introduced 0 → fixed 5.0.2

zebrad

crates.io

SEMVER · introduced 0 → fixed 4.3.1

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