CVE-2026-104432

5.3 MEDIUMpublic exploit available

Published 2026-10-02 · Updated 2026-10-06

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD description

Zebra before 6.3.0 contains an improper exceptional condition check in ChainSync::obtain_tips that discards valid one-hash FindBlocks responses, falsely reporting close-to-tip status. Peers returning only the next block hash cause a zero-length sync sample, making the /ready endpoint return 200 OK while the node remains behind the tip.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weaknesses

CWE-754

Public exploit & PoC references

https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-h8m8-844p-v3m9

All references

https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-h8m8-844p-v3m9
https://www.vulncheck.com/advisories/zebra-before-6.3.0-false-readiness-via-discarded-one-hash-findblocks-response

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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