ZEBRA: rk Identity Point Panic in Transaction Verification
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-617.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| ZcashFoundation | zebra | zebra-chain < 6.0.2; zebrad < 4.3.1 | — | No fix listed | CNA |
| — | zebrad (crates.io) | before 4.3.1 | 4.3.1 | Patch available | GHSA-452v-w3gx-72wg |
| — | zebra-chain (crates.io) | before 6.0.2 | 6.0.2 | Patch available | GHSA-452v-w3gx-72wg |
- zebra VendorZcashFoundation Affected zebra-chain < 6.0.2; zebrad < 4.3.1 Fixed in — No fix listed CNA
- zebrad (crates.io) Vendor— Affected before 4.3.1 Fixed in 4.3.1 Patch available GHSA-452v-w3gx-72wg
- zebra-chain (crates.io) Vendor— Affected before 6.0.2 Fixed in 6.0.2 Patch available GHSA-452v-w3gx-72wg
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:zfnd:zebra-chain:*:*:*:*:*:rust:*:* | before 6.0.2 | Vulnerable | ZcashFoundation |
| cpe:2.3:a:zfnd:zebrad:*:*:*:*:*:rust:*:* | before 4.3.1 | Vulnerable | ZcashFoundation |
- cpe:2.3:a:zfnd:zebra-chain:*:*:*:*:*:rust:*:* Versions before 6.0.2 Vulnerable ·ZcashFoundation
- cpe:2.3:a:zfnd:zebrad:*:*:*:*:*:rust:*:* Versions before 4.3.1 Vulnerable ·ZcashFoundation
Remediation
- Fix · GHSA-452v-w3gx-72wg zebrad (crates.io) Fixed in 4.3.1 Advisory →
- Fix · GHSA-452v-w3gx-72wg zebra-chain (crates.io) Fixed in 6.0.2 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-41584
- 2026-10-03 Alias added: GHSA-452v-w3gx-72wg
References
More ZcashFoundation Zebra-chain vulnerabilities
- TI-2026-26497 Zebra node crash — V5 transaction hash panic (P2P reachable) CVSS 4.0CRITICAL 9.2
- TI-2026-32434 ZEBRA: Allocation Amplification in Inbound Network Deserializers CVSS 3.1MEDIUM 5.3
Sources
- CVE-2026-41584 · CVE Program
- CVE-2026-41584 · NVD
- FIRST EPSS
- GHSA-452v-w3gx-72wg · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences