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CVE-2026-41585

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

No known exploitation. EPSS puts it in the 35th percentile. Fixed versions are out.

CVSS 3.16.5MediumEPSS percentile35th0.4% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
No public exploit knownFix3 products2 fixed builds listed below

Published Updated Sources: CVE.org, NVD

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • ZcashFoundation zebraAffected: zebra-rpc >= 1.0.0-beta.45, < 6.0.2Upgrade to: not statedAffected: zebrad >= 2.2.0, < 4.3.1Upgrade to: not statedStated by: CVE record
  • Zfnd Zebra-rpcAffected: ≥ 2.0.0, < 6.0.2Upgrade to: 6.0.2Stated by: NVD
  • Zfnd ZebradAffected: ≥ 2.2.0, < 4.3.1Upgrade to: 4.3.1Stated by: NVD

Versions as the sources state them. Full version matrix after sign-in

What it is

From the CVE record

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.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS35th
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

0.4% chance of exploitation activity in the next 30 days, which ranks it in the 35th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

5 events over 0 days, from the signal feeds we watch.

  1. Patch availablepublished, weakness classified, att&ck mapped, record updated

Affected products

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Scored 6.5 by NVD.

How it is reached

  • Attack Vector NetworkExploitable remotely over the network without any special conditions
  • Attack Complexity LowNo special conditions — the attack can be reliably reproduced
  • Privileges Required LowRequires basic user-level privileges
  • User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

  • Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

  • Confidentiality NoneNo confidentiality impact
  • Integrity NoneNo integrity impact
  • Availability HighTotal denial of service — the component is completely unavailable

Weaknesses

ATT&CK techniques

Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.

Sources

References in the record

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We'll flag the next CVE, public exploit or patch for Zebra-rpc, not every advisory.