{"id":"CVE-2026-34202","aliases":["GHSA-qp6f-w4r3-h8wg"],"url":"https://o3.security/vulnerability/CVE-2026-34202","summary":"Zebra node crash — V5 transaction hash panic (P2P reachable)","details":"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.","published":"2026-03-31T14:02:56.454Z","modified":"2026-08-07T11:49:19.909980846Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"crates.io","name":"zebrad","fixedVersion":"4.3.0"},{"ecosystem":"crates.io","name":"zebra-chain","fixedVersion":"6.0.1"}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/ZcashFoundation/zebra/releases/tag/v4.3.0"},{"type":"WEB","url":"https://zfnd.org/zebra-4-3-0-critical-security-fixes-zip-235-support-and-performance-improvements"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34202.json"},{"type":"ADVISORY","url":"https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-qp6f-w4r3-h8wg"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34202"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:49:19.909980846Z"}}