{"apiVersion":"1.0","identifier":"CVE-2026-52829","description":"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 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.","publishedAt":"2026-08-18T20:17:18","lastModifiedAt":"2026-08-18T20:17:18","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-52829","cvssScore":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","epssProbability":0.00432,"riskScore":0.78,"affectedProduct":"Zebra","affectedVersions":"<4.5.0","vulnerabilityType":"Other","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-52829","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-52829","en":"https://www.redsauce.net/en/cves/CVE-2026-52829","fr":"https://www.redsauce.net/fr/cves/CVE-2026-52829","pt":"https://www.redsauce.net/pt/cves/CVE-2026-52829","de":"https://www.redsauce.net/de/cves/CVE-2026-52829","sk":"https://www.redsauce.net/sk/cves/CVE-2026-52829","el":"https://www.redsauce.net/el/cves/CVE-2026-52829"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-52829"}}