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Advisory record · GHSA-qp6f-w4r3-h8wg

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

CVSS 9.2 CriticalCriticalEPSS 0.0079 · 56th percentile

Critical, because:

  • CVSS score 9.2: 9.0 or more.

How we decide what’s critical

Published by the GitHub Advisory Database at 27 Mar 2026, 22:19 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
zebradcrates.io<4.3.04.3.0
zebra-chaincrates.io<6.0.16.0.1
Identifiers
GHSA-qp6f-w4r3-h8wg · CVE-2026-34202
Weakness (CWE)
CWE-94 · CWE-1336
Tags
Published
27 Mar 2026
Updated
31 Mar 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The zebrad crate before 4.3.0 and zebra-chain before 6.0.1 panic on certain malformed V5 transactions. A remote, unauthenticated attacker can crash a node with one crafted transaction sent over P2P or through the sendrawtransaction RPC method. Upgrade zebrad to 4.3.0 and zebra-chain to 6.0.1; if that is not possible, keep the RPC port off the public Internet.

Written 8 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
9.2 Critical 4.0 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 CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0079, the 56th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 15:18 UTC First seen by agentprime
  2. 31 Oct 2026, 15:18 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.