---
title: "CVE-2026-41584: Zebra has rk Identity Point Panic in Transaction Verification"
url: https://erroneo.us/security/cve/CVE-2026-41584/
description: "CVE-2026-41584 (zebrad (crates.io (Rust))): ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.1 and prior to zebra-chain version…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-05-08
date_modified: 2026-05-12
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-41584"
kev: false
cvss: 9.2
epss: 0.0046
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-41584: Zebra has rk Identity Point Panic in Transaction Verification

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.5% , percentile 39: FIRST’s model estimates a 0.5% chance of exploitation activity in the next 30 days, higher than 39% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes zebrad (crates.io (Rust)) < 4.3.1, fixed in 4.3.1 ; zebra-chain (crates.io (Rust)) < 6.0.2, fixed in 6.0.2 . Check your lockfile, including transitive dependencies.

## What it is

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 packages

- crates.io (Rust) `zebrad` < 4.3.1 → fixed: 4.3.1
- crates.io (Rust) `zebra-chain` < 6.0.2 → fixed: 6.0.2

## Affected products (CVE record)

- ZcashFoundation zebra: zebra-chain < 6.0.2, zebrad < 4.3.1

## Severity

- GitHub_M CVSS 4.0: 9.2 `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`
- GitHub CVSS 4.0: 9.2 `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`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable yes , technical impact partial .
- FIRST EPSS (model of 2026-10-21): 0.46% probability of exploitation activity in the next 30 days; percentile 39.

## Sources

- [GitHub Advisory GHSA-452v-w3gx-72wg](https://github.com/advisories/GHSA-452v-w3gx-72wg)
- [CVE.org record CVE-2026-41584](https://www.cve.org/CVERecord?id=CVE-2026-41584)
- [NVD entry CVE-2026-41584](https://nvd.nist.gov/vuln/detail/CVE-2026-41584)
- [github.com](https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-452v-w3gx-72wg)

---
Source page: https://erroneo.us/security/cve/CVE-2026-41584/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt