CVE-2026-109365

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-109365
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109365.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-109365
Aliases
  • GHSA-3c94-hf7p-g5mf
Published
2026-10-12T16:05:42Z
Modified
2026-10-13T02:46:49Z
Severity
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
Zebra before 6.4.0 Denial of Service via Same-Hash Forged Block Bodies
Details

Zebra before 6.4.0 contains an uncontrolled resource consumption vulnerability that allows unauthenticated peers to force full proof verification by serving forged block bodies with valid header hashes. Attackers can flip authorizing-only bytes such as a coinbase scriptSig, wasting Sapling, Orchard, and Ironwood proof verification without penalty and stalling sync for 67 seconds.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-345"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109365.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
aedb094dc6dd13a0a565947e7ab4466a8b149d39
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "6.4.0"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

4.*
4.3.1
tower-batch-control-v1.*
tower-batch-control-v1.1.0
tower-batch-control-v1.1.1
tower-fallback-v0.*
tower-fallback-v0.2.42
tower-fallback-v0.2.43
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
v6.1.0
v6.2.0
v6.2.1
v6.2.2
v6.2.3
v6.3.0
zebra-chain-v11.*
zebra-chain-v11.1.0
zebra-chain-v11.2.0
zebra-chain-v11.3.0
zebra-chain-v12.*
zebra-chain-v12.0.0
zebra-consensus-v11.*
zebra-consensus-v11.0.0
zebra-consensus-v12.*
zebra-consensus-v12.0.0
zebra-consensus-v12.0.1
zebra-consensus-v13.*
zebra-consensus-v13.0.0
zebra-consensus-v14.*
zebra-consensus-v14.0.0
zebra-consensus-v14.0.1
zebra-consensus-v15.*
zebra-consensus-v15.0.0
zebra-network-v10.*
zebra-network-v10.1.0
zebra-network-v10.1.1
zebra-network-v10.2.0
zebra-network-v10.2.1
zebra-network-v11.*
zebra-network-v11.0.0
zebra-network-v12.*
zebra-network-v12.0.0
zebra-node-services-v10.*
zebra-node-services-v10.0.0
zebra-node-services-v9.*
zebra-node-services-v9.1.0
zebra-node-services-v9.1.1
zebra-node-services-v9.1.2
zebra-rpc-v11.*
zebra-rpc-v11.1.0
zebra-rpc-v12.*
zebra-rpc-v12.0.0
zebra-rpc-v13.*
zebra-rpc-v13.0.0
zebra-rpc-v14.*
zebra-rpc-v14.0.0
zebra-rpc-v15.*
zebra-rpc-v15.0.0
zebra-rpc-v16.*
zebra-rpc-v16.0.0
zebra-script-v10.*
zebra-script-v10.1.0
zebra-script-v10.1.1
zebra-script-v10.1.2
zebra-script-v11.*
zebra-script-v11.0.0
zebra-state-v10.*
zebra-state-v10.1.0
zebra-state-v11.*
zebra-state-v11.0.0
zebra-state-v11.1.0
zebra-state-v11.1.1
zebra-state-v12.*
zebra-state-v12.0.0
zebra-state-v12.0.1
zebra-state-v13.*
zebra-state-v13.0.0
zebra-utils-v10.*
zebra-utils-v10.0.0
zebra-utils-v10.0.1
zebra-utils-v9.*
zebra-utils-v9.1.0
zebra-utils-v9.1.1
zebra-utils-v9.1.3
zebra-utils-v9.1.4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109365.json"