CVE-2026-52829
- Source
- https://cve.org/CVERecord?id=CVE-2026-52829
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52829.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-52829
- Aliases
- Published
- 2026-08-18T19:27:57Z
- Modified
- 2026-09-11T03:30:52Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- ZEBRA: IPv4-Mapped Mempool Misbehavior Update Aborts Zebra Address Book
- Details
-
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.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-617", "CWE-843" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52829.json" }- References
-
- https://github.com/ZcashFoundation/zebra/releases/tag/v4.5.0
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52829.json
- https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-63wg-wjjj-7cp8
- https://nvd.nist.gov/vuln/detail/CVE-2026-52829
- https://github.com/ZcashFoundation/zebra/commit/1440b43ca7df59aca948090d45117557b217a6cd