CVE-2026-41584

critical · 9.2

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.

9.2

CVSS

0.3%

EPSS (exploit prob.)

19th

EPSS percentile

2026-05-08

Published

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses

CWE-617

Affected products

Vendor	Product	Affected versions
zfnd	zebra-chain	< 6.0.2
zfnd	zebrad	< 4.3.1

Check a specific version with /api/v1/cve/match.

References

https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-452v-w3gx-72wg

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-41584