Find a vulnerability

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                "id": "CVE-2026-52829",
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        "title": "CISA ADP Vulnrichment"
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          "value": "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."
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          "descriptions": [
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              "cweId": "CWE-843",
              "description": "CWE-843: Access of Resource Using Incompatible Type (\u0027Type Confusion\u0027)",
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          "name": "https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-63wg-wjjj-7cp8",
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        "advisory": "GHSA-63wg-wjjj-7cp8",
        "discovery": "UNKNOWN"
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      "title": "ZEBRA: IPv4-Mapped Mempool Misbehavior Update Aborts Zebra Address Book"
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              "version": "\u003c 4.5.0"
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        {
          "product": "zebra-state",
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              "version": "\u003c 7.0.0"
            }
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          "value": "ZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, a malicious block producer can terminate zebrad by placing the same shielded transaction in a non-finalized parent block and its child. In zebra-state/src/service/non_finalized_state/chain.rs, Chain::push originally inserted the transaction hash into tx_loc_by_hash and asserted uniqueness before updating shielded data and running the duplicate Sprout, Sapling, or Orchard nullifier checks. The repeated transaction therefore reached the transactions must be unique within a single chain assertion before contextual validation could reject it cleanly. Zebra release builds use panic equals abort, so the reachable assertion terminates the entire process; exploitation requires either two consecutive attacker-mined blocks or an attacker-mined child immediately after an honest block includes the attacker\u0027s shielded transaction. This issue is fixed in version 4.5.0."
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      "source": {
        "advisory": "GHSA-hhm7-qrv5-h4r6",
        "discovery": "UNKNOWN"
      },
      "title": "ZEBRA: Repeated Non-Finalized Shielded Transaction Aborts Zebra Before Duplicate-Nullifier Rejection"
    }
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    "cveId": "CVE-2026-52739",
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        {
          "product": "zebra-state",
          "vendor": "ZcashFoundation",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 7.0.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "ZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, a consensus-valid block containing a long chain of transparent self-spends to one address can permanently halt Zebra nodes. In zebra-state/src/service/finalized_state/zebra_db/transparent.rs, the finalized-state writer originally applied every newly created output as a credit before applying any spent-output debit from the same block. That credit-first ordering can make the intermediate per-address balance exceed MAX_MONEY even though the final net balance is valid, causing an expect-based panic under the panic equals abort release profile. Because zcashd accepts the triggering block and Zebra encounters it again after every restart, the halt persists until patched software is deployed; exploitation requires mining the specially constructed block and temporarily committing sufficient ZEC to the self-spend chain. This issue is fixed in version 4.5.0."
        }
      ],
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        {
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            "subConfidentialityImpact": "NONE",
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            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
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          "name": "https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-w834-cf6p-9m9w",
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          ],
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          "name": "https://github.com/ZcashFoundation/zebra/commit/1440b43ca7df59aca948090d45117557b217a6cd",
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          "url": "https://github.com/ZcashFoundation/zebra/releases/tag/v4.5.0"
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      ],
      "source": {
        "advisory": "GHSA-w834-cf6p-9m9w",
        "discovery": "UNKNOWN"
      },
      "title": "ZEBRA: Finalized address balance credit-first overflow on consensus-valid blocks"
    }
  },
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    "cveId": "CVE-2026-52738",
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              "content": {
                "id": "CVE-2026-52737",
                "options": [
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                    "Exploitation": "none"
                  },
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                  },
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                    "Technical Impact": "partial"
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                "role": "CISA Coordinator",
                "timestamp": "2026-08-18T19:33:21.510952Z",
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          "dateUpdated": "2026-08-18T19:33:34.092Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "zebra",
          "vendor": "ZcashFoundation",
          "versions": [
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              "version": "\u003c 4.5.0"
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          ]
        },
        {
          "product": "zebra-consensus",
          "vendor": "ZcashFoundation",
          "versions": [
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              "version": "\u003c 7.0.0"
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          ]
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      ],
      "descriptions": [
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          "lang": "en",
          "value": "ZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, a malicious unauthenticated P2P peer can answer Zebra\u0027s outbound getblocks or FindBlocks request with a small two-hash inventory and then serve a syntactically valid block whose coinbase height is far above the local chain tip. In zebrad/src/components/sync/downloads.rs, BlockDownloadVerifyError::AboveLookaheadHeightLimit originally carried only the block height and hash, so handle_block_response could not attribute the failure to the advertising peer. The error then reached the restart-worthy default path in zebrad/src/components/sync.rs, cancelling all in-flight downloads from honest peers and imposing a 67-second sync restart delay on mainnet. Because the peer was neither scored nor disconnected, the peer could repeat the cycle indefinitely with minimal bandwidth and significantly degrade synchronization without corrupting state. This issue is fixed in version 4.5.0."
        }
      ],
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            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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            "version": "3.1"
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          "descriptions": [
            {
              "cweId": "CWE-345",
              "description": "CWE-345: Insufficient Verification of Data Authenticity",
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              "type": "CWE"
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          "name": "https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-gvjc-3w7c-92jx",
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          "name": "https://github.com/ZcashFoundation/zebra/pull/10647",
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      ],
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        "advisory": "GHSA-gvjc-3w7c-92jx",
        "discovery": "UNKNOWN"
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      "title": "ZEBRA: Sync restart poisoning from single unauthenticated peer via above-lookahead block"
    }
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    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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    "cveId": "CVE-2026-52737",
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                "id": "CVE-2026-52736",
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                "timestamp": "2026-08-18T19:38:19.383112Z",
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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          "product": "zebra",
          "vendor": "ZcashFoundation",
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          "lang": "en",
          "value": "ZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, a remote unauthenticated P2P peer can stall a Zebra node by racing an invalid block body against the valid canonical body for the same block header hash. ZIP-244 permits the attacker to mutate coinbase scriptSig authentication data while retaining the transaction identifiers, merkle root, and block header hash, so the poisoned body fails later commitment validation but shares the canonical hash. In zebra-state/src/service.rs, queue_and_commit_to_non_finalized_state recorded the hash in non_finalized_block_write_sent_hashes before contextual validation completed and did not remove it when the write task rejected the body. When the honest body later arrived, the cached hash caused KnownBlock::WriteChannel duplicate handling to suppress it, leaving the node stuck one height behind until restart or reorganization. This issue is fixed in version 4.5.0."
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          "name": "https://github.com/ZcashFoundation/zebra/commit/1440b43ca7df59aca948090d45117557b217a6cd",
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          "url": "https://github.com/ZcashFoundation/zebra/releases/tag/v4.5.0"
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      ],
      "source": {
        "advisory": "GHSA-4m69-67m6-prqp",
        "discovery": "UNKNOWN"
      },
      "title": "ZEBRA: Block suppression via NU5 same-header body poisoning of sent-hash cache"
    }
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    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-44499",
    "datePublished": "2026-05-08T15:11:24.837Z",
    "dateReserved": "2026-05-06T18:28:20.886Z",
    "dateUpdated": "2026-05-08T17:23:27.910Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}