ZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, an unauthenticated IPv4 peer can deterministically terminate a synced Zebra node using the default Linux dual-stack listener configuration. The handshake path canonicalized an …
Exact source revision recorded 7 Nov 2026 11:36:16 UTC. It does not establish the source's current position. Latest evidence.
euvd · EUVD-2026-61172
PublishedZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, an unauthenticated IPv4 peer can deterministically terminate a synced Zebra node using the default Linux dual-stack listener configuration. The handshake path canonicalized an IPv4-mapped IPv6 PeerSocketAddr such as ::ffff:127.0.0.1 to plain IPv4 before storing it through MetaAddr::new_connected, but the mempool misbehavior path forwarded the raw transient address to MetaAddrChange::UpdateMisbehavior. In zebra-network/src/meta_addr.rs, apply_to_meta_addr then compared the canonical address-book entry with the raw update address and reached its unexpected address mismatch assertion. After the misbehavior batch flush, panic equals abort terminated zebrad; the peer only needed to complete a P2P handshake and advertise an invalid mempool transaction. This issue is fixed in version 4.5.0.
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Original publisher date fields
datePublished: Aug 18, 2026, 7:27:57 PM
dateUpdated: Aug 18, 2026, 7:44:56 PM
- Source published
- Aug 18, 2026, 7:27:57 PM (timezone not stated)
- Source modified
- Aug 18, 2026, 7:44:56 PM (timezone not stated)
- Observed here
- 7 Nov 2026 11:36:16 UTC
- Source terms
- ENISA EUVD · source terms and attribution apply
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EUVD CVSS 3.1 · 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H