CVE-2026-34377
8.1 · HIGHOverview
CVE-2026-34377 is a high-severity vulnerability affecting zfnd zebra. It was published on March 31, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.0 and zebra-consensus version 5.0.1, a logic error in Zebra's transaction verification cache could allow a malicious miner to induce a consensus split. By matching a valid transaction's txid while providing invalid authorization data, a miner could cause vulnerable Zebra nodes to accept an invalid block, leading to a consensus split from the rest of the Zcash network. This would not allow invalid transactions to be accepted but could result in a consensus split between vulnerable Zebra nodes and invulnerable Zebra and Zcashd nodes. This issue has been patched in zebrad version 4.3.0 and zebra-consensus version 5.0.1.
Remediation
Check the references section for vendor advisories and patches from zfnd. Update zebra to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| zfnd | zebra | >= 0, < 4.3.0 | Affected |
| zfnd | zebra-consensus | >= 0, < 5.0.1 | Affected |
Frequently Asked Questions
What is CVE-2026-34377?
CVE-2026-34377 is a high-severity vulnerability affecting zfnd zebra. It was published on March 31, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).
How severe is CVE-2026-34377?
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-34377?
Check the references section for vendor advisories and patches from zfnd. Update zebra to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-34377?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-34377 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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