Critical 9.2Published Mar 31, 2026

CVE-2026-34202Zebra node crash — V5 transaction hash panic (P2P reachable)

Updated under an hour ago (Oct 26, 2026, 6:40 PM ET)

Does this affect you?

It affects ZcashFoundation zebra and 3 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for ZcashFoundation zebra

Exploited in the last 30 days

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.

CVSS: 9.2 CRITICAL (v4.0, CNA)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
Weakness (CWE): CWE-1336, CWE-94
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Mar 31, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

ZcashFoundation zebra zcashfoundation:zebra (from the name)	before 4.3.0	CNA record
ZcashFoundation zebra-chain zcashfoundation:zebra_chain (from the name)	before 6.0.1	CNA record
zfnd zebra zfnd:zebra	before 4.3.0	NVD
zfnd zebra-chain zfnd:zebra-chain	before 6.0.1	NVD

References

References

https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-qp6f-w4r3-h8wg	x-refsource-confirm, vendor-advisory
https://github.com/ZcashFoundation/zebra/releases/tag/v4.3.0	x-refsource-misc, release-notes
https://zfnd.org/zebra-4-3-0-critical-security-fixes-zip-235-support-and-performance-improvements	x-refsource-misc, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.