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CVE-2026-54496

9.3 · CRITICAL

ZEBRA is a Zcash node written entirely in Rust.

Published Jul 17, 2026CWE-345EPSS 0.32%

Overview

CVE-2026-54496 is a critical-severity vulnerability. It was published on July 17, 2026 and has a CVSS 3.1 base score of 9.3 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.3, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad 5.0.0, halo2_gadgets 0.5.0, orchard 0.14.0, zcash_primitives 0.28.0, and zcashd 6.20.0, the variable-base scalar multiplication gadget in halo2_gadgets/src/ecc/chip/mul/incomplete.rs used assign_advice() for the base point without a copy constraint tying it to the actual base, allowing a malicious prover to produce a valid proof for an Orchard Action with an under-constrained base point and bypass the diversified-address-integrity check that binds pk_d, g_d, ivk, the nullifier (nf), and the spend validating key (ak) to the note being spent. This issue is fixed in zebrad 5.0.0, halo2_gadgets 0.5.0, orchard 0.14.0, zcash_primitives 0.28.0, and zcashd 6.20.0.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

GitHubgithub.com/ZcashFoundation/zebra/releases/tag/v5.0.0GitHubgithub.com/ZcashFoundation/zebra/security/advisories/GHSA-ww9q-8r59-xv46GitHubgithub.com/zcash/halo2/releases/tag/halo2_gadgets-0.5.0GitHubgithub.com/zcash/librustzcash/releases/tag/zcash_primitives-0.28.0GitHubgithub.com/zcash/orchard/releases/tag/0.14.0GitHubgithub.com/zcash/zcash/releases/tag/v6.20.0Refzfnd.org/zebra-4-5-3-and-5-0-0-emergency-soft-fork-and-nu6-2-activation

How CyberStrike helps

Frequently asked questions

What is CVE-2026-54496?

CVE-2026-54496 is a critical-severity vulnerability. It was published on July 17, 2026 and has a CVSS 3.1 base score of 9.3 (CRITICAL).

How severe is CVE-2026-54496?

This vulnerability has a CVSS 3.1 base score of 9.3, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-54496?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2026-54496?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-54496 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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