CVE-2026-104424

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Source
https://cve.org/CVERecord?id=CVE-2026-104424
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-104424.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-104424
Aliases
  • GHSA-95m2-vx53-v2jw
Published
2026-10-02T11:38:05Z
Modified
2026-10-21T02:54:31Z
Severity
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
Zebra before 6.1.0 Incorrect Block Size Calculation in getblocktemplate
Details

Zebra before 6.1.0 contains an incorrect calculation vulnerability in its ZIP-317 block template selector that omits header and transaction-count size from the block budget. Attackers can place valid selectable transactions in a victim miner's mempool to shape templates into oversized blocks, causing rejection and wasted proof-of-work.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-131"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104424.json"
}
References

Affected packages

Git / github.com/zcashfoundation/zebra

Affected ranges

Type
GIT
Repo
https://github.com/zcashfoundation/zebra
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
de14bef05582ebdad121b7e236e1cc13afe6ad15
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "6.1.0"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandardRange"
        },
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "6.1.0"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}

Affected versions

4.*
4.3.1
tower-batch-control-v1.*
tower-batch-control-v1.1.0
tower-fallback-v0.*
tower-fallback-v0.2.42
v1.*
v1.0.0
v1.0.0-alpha.0
v1.0.0-alpha.1
v1.0.0-alpha.10
v1.0.0-alpha.11
v1.0.0-alpha.12
v1.0.0-alpha.13
v1.0.0-alpha.14
v1.0.0-alpha.15
v1.0.0-alpha.16
v1.0.0-alpha.17
v1.0.0-alpha.18
v1.0.0-alpha.19
v1.0.0-alpha.2
v1.0.0-alpha.3
v1.0.0-alpha.4
v1.0.0-alpha.5
v1.0.0-alpha.6
v1.0.0-alpha.7
v1.0.0-alpha.8
v1.0.0-alpha.9
v1.0.0-beta.0
v1.0.0-beta.1
v1.0.0-beta.10
v1.0.0-beta.11
v1.0.0-beta.12
v1.0.0-beta.13
v1.0.0-beta.14
v1.0.0-beta.15
v1.0.0-beta.2
v1.0.0-beta.3
v1.0.0-beta.4
v1.0.0-beta.5
v1.0.0-beta.6
v1.0.0-beta.7
v1.0.0-beta.8
v1.0.0-beta.9
v1.0.0-rc.0
v1.0.0-rc.1
v1.0.0-rc.2
v1.0.0-rc.3
v1.0.0-rc.4
v1.0.0-rc.5
v1.0.0-rc.6
v1.0.0-rc.7
v1.0.0-rc.8
v1.0.0-rc.9
v1.0.1
v1.1.0
v1.2.0
v1.3.0
v1.4.0
v1.5.0
v1.5.1
v1.5.2
v1.6.0
v1.6.1
v1.7.0
v1.8.0
v1.9.0
v2.*
v2.0.0
v2.0.0-rc.0
v2.0.1
v2.1.0
v2.2.0
v2.3.0
v2.4.0
v2.4.2
v2.5.0
v3.*
v3.0.0
v3.0.0-rc.0
v3.1.0
v4.*
v4.0.0
v4.1.0
v4.2.0
v4.3.0
v4.3.1
v4.4.0
v4.4.1
v4.5.0
v4.5.1
v5.*
v5.0.0
v5.1.0
v5.1.1
v5.2.0
v6.*
v6.0.0
v6.0.0-rc.0
zebra-chain-v11.*
zebra-chain-v11.1.0
zebra-consensus-v11.*
zebra-consensus-v11.0.0
zebra-network-v10.*
zebra-network-v10.1.0
zebra-node-services-v9.*
zebra-node-services-v9.1.0
zebra-rpc-v11.*
zebra-rpc-v11.1.0
zebra-script-v10.*
zebra-script-v10.1.0
zebra-state-v10.*
zebra-state-v10.1.0
zebra-utils-v9.*
zebra-utils-v9.1.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-104424.json"