CVE-2026-41585

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

State: Published
Severity: 6.9 Medium
Published: May 8, 2026
Updated: May 8, 2026
Reserved: Apr 21, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H	GitHub_M

Weaknesses

CWE-248 Uncaught Exception
CWE-617 Reachable Assertion

Affected Products

Product	Versions
zebraZcashFoundation	zebra-rpc >= 1.0.0-beta.45, < 6.0.2Affected zebrad >= 2.2.0, < 4.3.1Affected

References

https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-29x4-r6jv-ff4w

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