{"id":"CVE-2026-104429","summary":"Zebra before 6.0.0-rc.0 Per-Peer Mempool Admission Bypass via P2P tx Messages","details":"Zebra (zebrad) 5.0.0 before 6.0.0-rc.0 does not apply its per-peer mempool admission cap to transactions received as direct P2P tx messages, because these are queued without the sending peer recorded as their source. A remote inbound peer can push many unique transactions to occupy a disproportionate share of mempool admission slots, crowding out honest peers' transaction relay.","aliases":["GHSA-m9xx-8rcj-vmgp"],"modified":"2026-10-04T02:46:33.886640579Z","published":"2026-10-02T11:38:09.257Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-770"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104429.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104429.json"},{"type":"ADVISORY","url":"https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-m9xx-8rcj-vmgp"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-104429"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/zebra-before-6.0.0-rc.0-per-peer-mempool-admission-bypass-via-p2p-tx-messages"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/zcashfoundation/zebra","events":[{"introduced":"1e6519ea91e2d3035c20aadd4d9a40dcac2eed3a"},{"fixed":"15d578362448fb8c4a5d29a00dcfe8adb5184082"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"6.0.0-rc.0"},{"introduced":"5.0.0"}],"source":["AFFECTED_FIELD","DESCRIPTION"]}}],"versions":["v5.2.0","v5.1.0","v5.1.1","v5.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-104429.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"}]}