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CVE-2026-44500

ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.4.0, prior to zebra-chain version 7.0.0, and prior to zebra-network version 6.0.0, several inbound deserialization paths in Zebra allocated buffers sized against generic transport or block-size ceilings before the tighter protocol or consensus limits were enforced. An unauthenticated or post-handshake peer could therefore force the node to preallocate and parse for orders of magnitude more data than the protocol intended,
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2f6ee97772a18680af156f8785854e124da36de53362e5a320f0ac1d0e0876f5
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"zebra","vendor":"ZcashFoundation","versions":[{"status":"affected","version":"zebrad < 4.4.0"},{"status":"affected","version":"zebra-chain < 7.0.0"},{"status":"affected","version":"zebra-network < 6.0.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6263aaa10a4084fc18b6ad1854818d1d049348ec20b8692e28d0d463f32591b6 · sha256:8e93d06328159bbf… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:6263aaa10a4084fc18b6ad1854818d1d049348ec20b8692e28d0d463f32591b6 · sha256:8e93d06328159bbf… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6263aaa10a4084fc18b6ad1854818d1d049348ec20b8692e28d0d463f32591b6 · sha256:8e93d06328159bbf… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-438q-jx8f-cccv","tags":["x_refsource_CONFIRM"],"url":"https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-438q-jx8f-cccv"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6263aaa10a4084fc18b6ad1854818d1d049348ec20b8692e28d0d463f32591b6 · sha256:8e93d06328159bbf… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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