Is CVE-2026-34377 actively exploited?

No active exploitation of CVE-2026-34377 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-34377 be exploited remotely?

Yes. CVE-2026-34377 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-34377?

CVE-2026-34377 has a CVSS score of 8.1 (HIGH).

HOME VULNERABILITIESCVE-2026-34377

HIGH

CVE-2026-34377

CWE-347Published: March 31, 2026· Updated: Apr 6, 2026

8.1

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:6.7th

Official 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.

NVD Source

Technical Analysis

CVE-2026-34377 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.1.