by Kastro
Paper/Archive/CVE-2026-41584

CVE-2026-41584

ZcashFoundation zebra — ZEBRA: rk Identity Point Panic in Transaction Verification

EPSS 0.3%CVSS 9.2
critical.is priorityof 100
31
CVSS 9.2 (CNA)9.2 / 10 × 3027.6Not in CISA KEV+300.0EPSS percentile 19.0.190 × 203.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.1 and prior to zebra-chain version 6.0.2, Orchard transactions contain a rk field which is a randomized validating key and also an elliptic curve point. The Zcash specification allows the field to be the identity (a "zero" value), however, the orchard crate which is used to verify Orchard proofs would panic when fed a rk with the identity value. Thus an attacker could send a crafted transaction that would make a Zebra node crash. This issue has been patched in zebrad version 4.3.1 and zebra-chain version 6.0.2.

Affected

ProductAffectedFixed inSource
zebrazebra-chain < 6.0.2–CNA
zebrazebrad < 4.3.1–CNA

Scores by source

GitHub_M (CNA)9.2CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

refgithub.com/ZcashFoundation/zebra/security/advisories/GHSA-452v-w3gx-72wg