{"schema_version":1,"title":"Zcash Foundation Zebra vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 9 vulnerabilities in Zcash Foundation Zebra: 0 in the last 7 days and 4 in the last 90 days, 3 of them critical and 0 exploited in the wild. The most recent, CVE-2026-52737, was published on 18 August 2026.","url":"https://junglewise.ai/threats/technologies/zebra","json_url":"https://junglewise.ai/threats/technologies/zebra.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/zebra","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":2,"all_time":9,"critical":3,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":4,"last_365_days":9},"latest":[{"cve":"CVE-2026-52737","cvss":5.3,"epss":0.0026,"slug":"cve-2026-52737-zcash-zebra-sync-restart-poisoning-via-above-lookahead-block","title":"ZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, a malicious unauthenticated P2P peer can answer Zebra's outbound getblocks o","severity":"medium","exploited":false,"published_at":"2026-08-18T20:17:17.75+00:00","url":"https://junglewise.ai/threats/cve-2026-52737-zcash-zebra-sync-restart-poisoning-via-above-lookahead-block"},{"cve":"CVE-2026-52734","cvss":5.3,"epss":0.0051,"slug":"cve-2026-52734-zcashfoundation-zebrad-memory-leak-in-mempool-download-pipeline","title":"ZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, an unauthenticated P2P peer can cause the mempool download pipeline to retai","severity":"medium","exploited":false,"published_at":"2026-08-18T20:17:17.08+00:00","url":"https://junglewise.ai/threats/cve-2026-52734-zcashfoundation-zebrad-memory-leak-in-mempool-download-pipeline"},{"cve":"CVE-2026-52732","cvss":5.3,"epss":0.0051,"slug":"cve-2026-52732-zcashfoundation-zebrad-denial-of-service-in-mempool-inbound-queue","title":"ZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, one unauthenticated P2P peer can monopolize all 25 MAX_INBOUND_CONCURRENCY s","severity":"medium","exploited":false,"published_at":"2026-08-18T20:17:16.71+00:00","url":"https://junglewise.ai/threats/cve-2026-52732-zcashfoundation-zebrad-denial-of-service-in-mempool-inbound-queue"},{"cve":"CVE-2026-54496","cvss":9.3,"slug":"cve-2026-54496-zcash-orchard-action-circuit-soundness-vulnerability-in-halo2","title":"Zcash Orchard Action circuit soundness vulnerability in halo2_gadgets","severity":"critical","exploited":false,"published_at":"2026-07-17T17:17:16.62+00:00","url":"https://junglewise.ai/threats/cve-2026-54496-zcash-orchard-action-circuit-soundness-vulnerability-in-halo2"},{"cve":"CVE-2026-44499","cvss":8.7,"epss":0.0014,"slug":"cve-2026-44499-zcash-foundation-zebra-denial-of-service-in-block-discovery","title":"Zcash Foundation Zebra Denial of Service in block discovery pipeline","severity":"high","exploited":false,"published_at":"2026-05-08T16:16:13.117+00:00","url":"https://junglewise.ai/threats/cve-2026-44499-zcash-foundation-zebra-denial-of-service-in-block-discovery"},{"cvss":9.2,"slug":"zcash-zebra-consensus-divergence-in-sighash-single-handling-8969cdaa","title":"Zcash Zebra consensus divergence in SIGHASH_SINGLE handling","severity":"critical","exploited":false,"published_at":"2026-05-07T21:02:30+00:00","url":"https://junglewise.ai/threats/zcash-zebra-consensus-divergence-in-sighash-single-handling-8969cdaa"},{"cve":"CVE-2026-44500","cvss":5.3,"slug":"cve-2026-44500-zcashfoundation-zebra-denial-of-service-via-allocation","title":"ZcashFoundation Zebra denial of service via allocation amplification","severity":"medium","exploited":false,"published_at":"2026-05-07T20:55:28+00:00","url":"https://junglewise.ai/threats/cve-2026-44500-zcashfoundation-zebra-denial-of-service-via-allocation"},{"cve":"CVE-2026-44498","cvss":7.5,"slug":"cve-2026-44498-zcash-zebra-consensus-failure-via-sigop-undercounting-in-block","title":"Zcash Zebra consensus failure via sigop undercounting in block validator","severity":"high","exploited":false,"published_at":"2026-05-07T20:54:33+00:00","url":"https://junglewise.ai/threats/cve-2026-44498-zcash-zebra-consensus-failure-via-sigop-undercounting-in-block"},{"cve":"CVE-2026-41583","cvss":9.1,"slug":"cve-2026-41583-zcash-foundation-zebra-consensus-divergence-in-sighash-handling","title":"Zcash Foundation Zebra consensus divergence in sighash handling","severity":"critical","exploited":false,"published_at":"2026-04-18T01:15:24+00:00","url":"https://junglewise.ai/threats/cve-2026-41583-zcash-foundation-zebra-consensus-divergence-in-sighash-handling"}],"weekly":[{"week":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":1,"exploited":0,"vulnerabilities":1},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":3},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0}],"related":[],"technology":{"hub":true,"name":"Zcash Foundation Zebra","slug":"zebra","vendor":{"name":"Zcash Foundation","slug":"zcash-foundation","url":"https://junglewise.ai/threats/vendors/zcash-foundation"},"aliases":[],"category":"node-software","homepage":"https://zfnd.org/zebra/","repo_url":"https://github.com/ZcashFoundation/zebra","description":"An independent, consensus-compatible implementation of a Zcash node written in Rust.","url":"https://junglewise.ai/threats/technologies/zebra"},"most_severe":[{"cve":"CVE-2026-54496","cvss":9.3,"slug":"cve-2026-54496-zcash-orchard-action-circuit-soundness-vulnerability-in-halo2","title":"Zcash Orchard Action circuit soundness vulnerability in halo2_gadgets","severity":"critical","exploited":false,"published_at":"2026-07-17T17:17:16.62+00:00","url":"https://junglewise.ai/threats/cve-2026-54496-zcash-orchard-action-circuit-soundness-vulnerability-in-halo2"},{"cvss":9.2,"slug":"zcash-zebra-consensus-divergence-in-sighash-single-handling-8969cdaa","title":"Zcash Zebra consensus divergence in SIGHASH_SINGLE handling","severity":"critical","exploited":false,"published_at":"2026-05-07T21:02:30+00:00","url":"https://junglewise.ai/threats/zcash-zebra-consensus-divergence-in-sighash-single-handling-8969cdaa"},{"cve":"CVE-2026-41583","cvss":9.1,"slug":"cve-2026-41583-zcash-foundation-zebra-consensus-divergence-in-sighash-handling","title":"Zcash Foundation Zebra consensus divergence in sighash handling","severity":"critical","exploited":false,"published_at":"2026-04-18T01:15:24+00:00","url":"https://junglewise.ai/threats/cve-2026-41583-zcash-foundation-zebra-consensus-divergence-in-sighash-handling"},{"cve":"CVE-2026-44499","cvss":8.7,"epss":0.0014,"slug":"cve-2026-44499-zcash-foundation-zebra-denial-of-service-in-block-discovery","title":"Zcash Foundation Zebra Denial of Service in block discovery pipeline","severity":"high","exploited":false,"published_at":"2026-05-08T16:16:13.117+00:00","url":"https://junglewise.ai/threats/cve-2026-44499-zcash-foundation-zebra-denial-of-service-in-block-discovery"},{"cve":"CVE-2026-44498","cvss":7.5,"slug":"cve-2026-44498-zcash-zebra-consensus-failure-via-sigop-undercounting-in-block","title":"Zcash Zebra consensus failure via sigop undercounting in block validator","severity":"high","exploited":false,"published_at":"2026-05-07T20:54:33+00:00","url":"https://junglewise.ai/threats/cve-2026-44498-zcash-zebra-consensus-failure-via-sigop-undercounting-in-block"},{"cve":"CVE-2026-52734","cvss":5.3,"epss":0.0051,"slug":"cve-2026-52734-zcashfoundation-zebrad-memory-leak-in-mempool-download-pipeline","title":"ZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, an unauthenticated P2P peer can cause the mempool download pipeline to retai","severity":"medium","exploited":false,"published_at":"2026-08-18T20:17:17.08+00:00","url":"https://junglewise.ai/threats/cve-2026-52734-zcashfoundation-zebrad-memory-leak-in-mempool-download-pipeline"},{"cve":"CVE-2026-52732","cvss":5.3,"epss":0.0051,"slug":"cve-2026-52732-zcashfoundation-zebrad-denial-of-service-in-mempool-inbound-queue","title":"ZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, one unauthenticated P2P peer can monopolize all 25 MAX_INBOUND_CONCURRENCY s","severity":"medium","exploited":false,"published_at":"2026-08-18T20:17:16.71+00:00","url":"https://junglewise.ai/threats/cve-2026-52732-zcashfoundation-zebrad-denial-of-service-in-mempool-inbound-queue"},{"cve":"CVE-2026-52737","cvss":5.3,"epss":0.0026,"slug":"cve-2026-52737-zcash-zebra-sync-restart-poisoning-via-above-lookahead-block","title":"ZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, a malicious unauthenticated P2P peer can answer Zebra's outbound getblocks o","severity":"medium","exploited":false,"published_at":"2026-08-18T20:17:17.75+00:00","url":"https://junglewise.ai/threats/cve-2026-52737-zcash-zebra-sync-restart-poisoning-via-above-lookahead-block"},{"cve":"CVE-2026-44500","cvss":5.3,"slug":"cve-2026-44500-zcashfoundation-zebra-denial-of-service-via-allocation","title":"ZcashFoundation Zebra denial of service via allocation amplification","severity":"medium","exploited":false,"published_at":"2026-05-07T20:55:28+00:00","url":"https://junglewise.ai/threats/cve-2026-44500-zcashfoundation-zebra-denial-of-service-via-allocation"}],"generated_at":"2026-09-26T09:11:00.170868+00:00"}