# Zcash Foundation Zebra-Script vulnerabilities

Source: https://junglewise.ai/threats/technologies/zcash-foundation-zebra-script  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/zcash-foundation-zebra-script.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 3 vulnerabilities in Zcash Foundation Zebra-Script: 0 in the last 7 days and 2 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-104435, was published on 2 October 2026. Nothing in the last four weeks, down from 2 vulnerabilities in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 2
- All time: 3 (1 critical, 0 exploited in the wild)

## About Zcash Foundation Zebra-Script

Zcash Foundation library for scripting and cryptographic operations on Zcash.

## Latest Zcash Foundation Zebra-Script vulnerabilities

- [CVE-2026-104435: Zebra consensus rule enforcement bypass in V5 SIGHASH_SINGLE](https://junglewise.ai/threats/cve-2026-104435-zebra-zebrad-4-4-0-and-zebra-script-6-0-0-fail-to-enforce-a-zip) (high, CVSS 7.4, published 2 Oct 2026)
- [CVE-2026-104430: Zebra P2SH sigop counting consensus divergence](https://junglewise.ai/threats/cve-2026-104430-zebra-zebrad-4-5-0-and-zebra-script-7-0-0-count-p2sh-redeem) (high, CVSS 7.5, published 2 Oct 2026)
- [CVE-2026-41583: Zcash Foundation Zebra consensus divergence in sighash handling](https://junglewise.ai/threats/cve-2026-41583-zcash-foundation-zebra-consensus-divergence-in-sighash-handling) (critical, CVSS 9.1, published 8 May 2026)

## Most severe Zcash Foundation Zebra-Script vulnerabilities

- [CVE-2026-41583: Zcash Foundation Zebra consensus divergence in sighash handling](https://junglewise.ai/threats/cve-2026-41583-zcash-foundation-zebra-consensus-divergence-in-sighash-handling) (critical, CVSS 9.1, published 8 May 2026)
- [CVE-2026-104430: Zebra P2SH sigop counting consensus divergence](https://junglewise.ai/threats/cve-2026-104430-zebra-zebrad-4-5-0-and-zebra-script-7-0-0-count-p2sh-redeem) (high, CVSS 7.5, published 2 Oct 2026)
- [CVE-2026-104435: Zebra consensus rule enforcement bypass in V5 SIGHASH_SINGLE](https://junglewise.ai/threats/cve-2026-104435-zebra-zebrad-4-4-0-and-zebra-script-6-0-0-fail-to-enforce-a-zip) (high, CVSS 7.4, published 2 Oct 2026)

## Vulnerabilities per week

Nothing in the last four weeks, down from 2 vulnerabilities in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 2 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other Zcash Foundation technologies

- [Zcash Foundation Zebra](https://junglewise.ai/threats/technologies/zebra): 25 vulnerabilities
- [Zcash Foundation Zebrad](https://junglewise.ai/threats/technologies/zcash-foundation-zebrad): 7 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Zcash Foundation Zebra-Script vulnerabilities", https://junglewise.ai/threats/technologies/zcash-foundation-zebra-script, 9 November 2026.