Zebra zebrad 4.4.0 and zebra-script 6.0.0 fail to enforce a ZIP-244 consensus rule, accepting V5 transparent inputs signed with SIGHASH_SINGLE that lack a corresponding output. Attackers can broadcast crafted V5 transactions with more input…
Historical advisory saved 30 Oct 2026 01:50:10 UTC. The publisher may have updated it since then. Latest advisory.
euvd · EUVD-2026-91445
PublishedZebra zebrad 4.4.0 and zebra-script 6.0.0 fail to enforce a ZIP-244 consensus rule, accepting V5 transparent inputs signed with SIGHASH_SINGLE that lack a corresponding output. Attackers can broadcast crafted V5 transactions with more inputs than outputs that Zebra accepts but zcashd rejects, causing a network consensus split.
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datePublished: Oct 2, 2026, 11:38:12 AM
dateUpdated: Oct 2, 2026, 3:16:42 PM
- Source published
- Oct 2, 2026, 11:38:12 AM (timezone not stated)
- Source modified
- Oct 2, 2026, 3:16:42 PM (timezone not stated)
- Saved here
- 30 Oct 2026 01:50:10 UTC
- Source terms
- ENISA EUVD · source terms and attribution apply
Original source record · Cite this exact observation · Complete original publisher JSON
Source: euvd · ENISA EUVD · source terms and attribution apply. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.
EUVD CVSS 4.0 · 8.3 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N