CVE-2026-41585 - ZEBRA: Denial of Service via Interrupted JSON-RPC Requests from Authenticated Clients

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MEDIUM

ZEBRA: Denial of Service via Interrupted JSON-RPC Requests from Authenticated Clients

Published May 8, 2026

6.9

MEDIUM

CVSS 4.0

EPSS 0.43%

Description

ZEBRA is a Zcash node written entirely in Rust. From zebrad versions 2.2.0 to before 4.3.1 and from zebra-rpc versions 1.0.0-beta.45 to before 6.0.2, a vulnerability in Zebra's JSON-RPC HTTP middleware allows an authenticated RPC client to cause a Zebra node to crash by disconnecting before the request body is fully received. The node treats the failure to read the HTTP request body as an unrecoverable error and aborts the process instead of returning an error response. This issue has been patched in zebrad version 4.3.1 and zebra-rpc version 6.0.2.

Affected products

Vendor ZcashFoundation Product Zebra Default
n/a
- Version
  zebra-rpc >= 1.0.0-beta.45, < 6.0.2
  Status
  affected
  Constraints
  -
- Version
  zebrad >= 2.2.0, < 4.3.1
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

ZcashFoundation

Zebra

n/a

Version	Status	Constraints
zebra-rpc >= 1.0.0-beta.45, < 6.0.2	affected	-
zebrad >= 2.2.0, < 4.3.1	affected	-

Remediation

No remediation recorded yet.

Weaknesses (2)

CWE-248

CWE-617

References (3)

https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-29x4-r6jv-ff4w
x_refsource_CONFIRMMitigationVendor Advisory
https://github.com/advisories/GHSA-29x4-r6jv-ff4w
Advisory
https://nvd.nist.gov/vuln/detail/CVE-2026-41585

Link	Providers	Tags
https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-29x4-r6jv-ff4w		x_refsource_CONFIRMMitigationVendor Advisory
https://github.com/advisories/GHSA-29x4-r6jv-ff4w		Advisory
https://nvd.nist.gov/vuln/detail/CVE-2026-41585