CVE-2026-44500

Published: Mag 08, 2026 Last Modified: Mag 08, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 5,3
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: low

Description

AI Translation Available

ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.4.0, prior to zebra-chain version 7.0.0, and prior to zebra-network version 6.0.0, several inbound deserialization paths in Zebra allocated buffers sized against generic transport or block-size ceilings before the tighter protocol or consensus limits were enforced. An unauthenticated or post-handshake peer could therefore force the node to preallocate and parse for orders of magnitude more data than the protocol intended, across headers messages, equihash solutions in block headers, Sapling spend vectors in V5/V4 transactions, and coinbase script bytes in blocks. This issue has been patched in zebrad version 4.4.0, zebra-chain version 7.0.0, and zebra-network version 6.0.0.

770

Allocation of Resources Without Limits or Throttling

Incomplete
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Availability
Potential Impacts:
Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Dos: Resource Consumption (Other)
Applicable Platforms
All platforms may be affected
Likelihood of Exploit: High
View CWE Details
Application

Zebrad by Zfnd

Product Information
Vendor Zfnd
Product Zebrad
Version Range Affected
To 4.4.0 (exclusive)
cpe:2.3:a:zfnd:zebrad:*:*:*:*:*:rust:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Zebra-Chain by Zfnd

Product Information
Vendor Zfnd
Product Zebra-Chain
Version Range Affected
To 7.0.0 (exclusive)
cpe:2.3:a:zfnd:zebra-chain:*:*:*:*:*:rust:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Zebra-Network by Zfnd

Product Information
Vendor Zfnd
Product Zebra-Network
Version Range Affected
To 6.0.0 (exclusive)
cpe:2.3:a:zfnd:zebra-network:*:*:*:*:*:rust:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://github.com/ZcashFoundation/zebra/security/advisorie…
https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-438q-jx8f-cccv