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CVE-2026-34202

Zebra node crash — V5 transaction hash panic (P2P reachable)

Published: Mar 31, 2026Updated: Jul 24, 2026 Sources: CVE List NVDCWE-94
7.5HIGH
NVD MITRE
EPSS Score
0.7%
Top 49.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.0 and zebra-chain version 6.0.1, a vulnerability in Zebra's transaction processing logic allows a remote, unauthenticated attacker to cause a Zebra node to panic (crash). This is triggered by sending a specially crafted V5 transaction that passes initial deserialization but fails during transaction ID calculation. This issue has been patched in zebrad version 4.3.0 and zebra-chain version 6.0.1.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-94CWE-1336CWE-502

Affected Products

zfnd
aka zebrad, zebra, zebra-chain
zebraMixed
OSS Libraries / generic-library
zebra-chainMixed
OSS Libraries / generic-library
ZcashFoundation
oss-project
zebraOn-prem
OSS Libraries
zebra-chainOn-prem
OSS Libraries

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

3 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/ZcashFoundation/zebra/releases/tag/v4.3.0
github.com
https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-qp6f-w4r3-h8wg
github.com
https://zfnd.org/zebra-4-3-0-critical-security-fixes-zip-235-support-and-performance-improvements
zfnd.org

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