CVE-2026-35679

Deferred Deferred - Pending Action

Proof Verification Bypass in Zcashd Sprout Pool Risks Fund Drain

Publication date: 2026-04-05

Last updated on: 2026-05-19

Assigner: MITRE

Description

Zcash zcashd before 6.12.0 allows invalid transactions to be accepted under certain conditions, which potentially could have resulted in the draining of user funds from the Sprout pool. It was sometimes not verifying Sprout proofs.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-04-05

Last Modified

2026-05-19

Generated

2026-07-06

AI Q&A

2026-04-06

EPSS Evaluated

2026-07-05

NVD

CVE-2026-35679

EUVD

EUVD-2026-19126

Affected Vendors & Products

Vendor	Product	Version / Range
zcash	zcashd	to 6.12.0 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-358	The product does not implement or incorrectly implements one or more security-relevant checks as specified by the design of a standardized algorithm, protocol, or technique.

Attack-Flow Graph

Executive Summary

This vulnerability affects Zcash zcashd versions before 6.12.0. It allows invalid transactions to be accepted under certain conditions because the software sometimes did not verify Sprout proofs properly.

As a result, this flaw could potentially lead to the draining of user funds from the Sprout pool.

Impact Analysis

The vulnerability could impact users by allowing invalid transactions to be accepted, which might result in the loss of funds from the Sprout pool.

Since the issue involves improper verification of Sprout proofs, it could lead to unauthorized draining of user funds.

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