Description
ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.1 and prior to zebra-chain version 6.0.2, Orchard transactions contain a rk field which is a randomized validating key and also an elliptic curve point. The Zcash specification allows the field to be the identity (a "zero" value), however, the orchard crate which is used to verify Orchard proofs would panic when fed a rk with the identity value. Thus an attacker could send a crafted transaction that would make a Zebra node crash. This issue has been patched in zebrad version 4.3.1 and zebra-chain version 6.0.2.
Published: 2026-05-08
Score: 9.2 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-452v-w3gx-72wg Zebra has rk Identity Point Panic in Transaction Verification
History

Fri, 08 May 2026 23:30:00 +0000

Type Values Removed Values Added
First Time appeared Zcashfoundation
Zcashfoundation zebra
Vendors & Products Zcashfoundation
Zcashfoundation zebra

Fri, 08 May 2026 18:30:00 +0000

Type Values Removed Values Added
First Time appeared Zfnd
Zfnd zebra-chain
Zfnd zebrad
CPEs cpe:2.3:a:zfnd:zebra-chain:*:*:*:*:*:rust:*:*
cpe:2.3:a:zfnd:zebrad:*:*:*:*:*:rust:*:*
Vendors & Products Zfnd
Zfnd zebra-chain
Zfnd zebrad
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Fri, 08 May 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 08 May 2026 15:15:00 +0000

Type Values Removed Values Added
Description ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.1 and prior to zebra-chain version 6.0.2, Orchard transactions contain a rk field which is a randomized validating key and also an elliptic curve point. The Zcash specification allows the field to be the identity (a "zero" value), however, the orchard crate which is used to verify Orchard proofs would panic when fed a rk with the identity value. Thus an attacker could send a crafted transaction that would make a Zebra node crash. This issue has been patched in zebrad version 4.3.1 and zebra-chain version 6.0.2.
Title ZEBRA: rk Identity Point Panic in Transaction Verification
Weaknesses CWE-617
References
Metrics cvssV4_0

{'score': 9.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H'}


Subscriptions

Zcashfoundation Zebra
Zfnd Zebra-chain Zebrad
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-08T16:04:49.931Z

Reserved: 2026-04-21T14:15:21.959Z

Link: CVE-2026-41584

cve-icon Vulnrichment

Updated: 2026-05-08T16:04:46.090Z

cve-icon NVD

Status : Analyzed

Published: 2026-05-08T15:16:41.240

Modified: 2026-05-08T18:21:13.283

Link: CVE-2026-41584

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-08T23:15:20Z

Weaknesses