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CVE-2026-40881

ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.0 and zebra-network version 5.0.1, when deserializing addr or addrv2 messages, which contain vectors of addresses, Zebra would fully deserialize them up to a maximum length (over 233,000) that was derived from the 2 MiB message size limit. This is much larger than the actual limit of 1,000 messages from the specification. Zebra would eventually check that limit but, at that point, the memory for the larger vector was alr
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:41731b51d65e5ea6e5acc3b5c877a21548157e4baa7be083cbc079e60208e47d
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"product":"zebra-network","vendor":"ZcashFoundation","versions":[{"status":"affected","version":"< 5.0.1"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:158b725f1d2d0c898375213c3639b2b372e233476e8b0c75ccca106e0a7821c1 · sha256:b4c2d56988e1514e… · /containers/cna/affected/1

{"product":"zebrad","vendor":"ZcashFoundation","versions":[{"status":"affected","version":"< 4.3.1"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:158b725f1d2d0c898375213c3639b2b372e233476e8b0c75ccca106e0a7821c1 · sha256:b4c2d56988e1514e… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"product":"zebra-network","vendor":"ZcashFoundation","versions":[{"status":"affected","version":"< 5.0.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:158b725f1d2d0c898375213c3639b2b372e233476e8b0c75ccca106e0a7821c1 · sha256:b4c2d56988e1514e… · /containers/cna/affected/1
{"product":"zebrad","vendor":"ZcashFoundation","versions":[{"status":"affected","version":"< 4.3.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:158b725f1d2d0c898375213c3639b2b372e233476e8b0c75ccca106e0a7821c1 · sha256:b4c2d56988e1514e… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6.3,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:158b725f1d2d0c898375213c3639b2b372e233476e8b0c75ccca106e0a7821c1 · sha256:b4c2d56988e1514e… · /containers/cna/metrics/0/cvssV4_0

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:v2:158b725f1d2d0c898375213c3639b2b372e233476e8b0c75ccca106e0a7821c1 · sha256:b4c2d56988e1514e… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["exploit"],"url":"https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-xr93-pcq3-pxf8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:158b725f1d2d0c898375213c3639b2b372e233476e8b0c75ccca106e0a7821c1 · sha256:b4c2d56988e1514e… · /containers/adp/0/references/0
{"name":"https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-xr93-pcq3-pxf8","tags":["x_refsource_CONFIRM"],"url":"https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-xr93-pcq3-pxf8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:158b725f1d2d0c898375213c3639b2b372e233476e8b0c75ccca106e0a7821c1 · sha256:b4c2d56988e1514e… · /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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