CVE-2026-34202CWE-1336CWE-94

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

Critical · published March 31, 2026

CVSS v4.0
9.2
EPSS
1%
Percentile
60.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
9.2 · CRITICAL
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
EPSS
0.00929 · 60.2th percentile
Weaknesses
CWE-1336 · Improper Neutralization of Special Elements Used in a Template Engine; CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-03-31T14:02Z
EPSS history
Timeline
  • 31 MAR 14:02Z
    Zebra node crash — V5 transaction hash panic (P2P reachable)
    cvelistv5