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    2 vulnerabilities found for zebra-rpc by ZcashFoundation

    CVE-2026-52731 (GCVE-0-2026-52731)

    Vulnerability from nvd – Published: 2026-08-18 19:25 – Updated: 2026-08-18 19:42
    VLAI
    Title
    ZEBRA: Full node denial of service via non-ASCII LongPollId in getblocktemplate
    Summary
    ZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, an attacker authenticated to an enabled Zebra RPC endpoint can terminate zebrad by supplying a getblocktemplate LongPollId containing multi-byte UTF-8 characters. In zebra-rpc/src/methods/types/long_poll.rs, LongPollId::from_str originally checked the input byte length and then sliced fixed byte ranges to parse encoded fields. A slice boundary can land inside a multi-byte character and trigger Rust's byte index is not a char boundary panic. Zebra release builds use panic equals abort, so one malformed authenticated RPC request terminates the entire node process and can be repeated after restart. This issue is fixed in version 4.5.0.
    Severity
    6.5 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-18 19:38 UTC
    CWE
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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                "id": "CVE-2026-52731",
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        "title": "CISA ADP Vulnrichment"
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        },
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        }
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      "title": "ZEBRA: Full node denial of service via non-ASCII LongPollId in getblocktemplate"
    }
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    CVE-2026-52731 (GCVE-0-2026-52731)

    Vulnerability from cvelistv5 – Published: 2026-08-18 19:25 – Updated: 2026-08-18 19:42
    VLAI
    Title
    ZEBRA: Full node denial of service via non-ASCII LongPollId in getblocktemplate
    Summary
    ZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, an attacker authenticated to an enabled Zebra RPC endpoint can terminate zebrad by supplying a getblocktemplate LongPollId containing multi-byte UTF-8 characters. In zebra-rpc/src/methods/types/long_poll.rs, LongPollId::from_str originally checked the input byte length and then sliced fixed byte ranges to parse encoded fields. A slice boundary can land inside a multi-byte character and trigger Rust's byte index is not a char boundary panic. Zebra release builds use panic equals abort, so one malformed authenticated RPC request terminates the entire node process and can be repeated after restart. This issue is fixed in version 4.5.0.
    Severity
    6.5 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-18 19:38 UTC
    CWE
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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