CVE-2026-104423

Published: Ott 02, 2026 Last Modified: Ott 02, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 8,7
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
HIGH 7,5
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high

Description

AI Translation Available

Zebra (zebrad) before 6.2.1 contains an asymmetric resource consumption vulnerability that allows unauthenticated peers to stall block verification by pushing V6 mempool transactions with invalid Halo2 proofs. Attackers can flood the shared unprioritized Halo2 verification queue with zero-fee transactions carrying zero-filled Orchard and Ironwood proofs, causing nodes to fall behind the chain tip.

405

Asymmetric Resource Consumption (Amplification)

Incomplete
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Availability
Potential Impacts:
Dos: Amplification Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Dos: Resource Consumption (Other)
Applicable Platforms
Technologies: Not Technology-Specific, Client Server
View CWE Details
https://github.com/ZcashFoundation/zebra/security/advisorie…
https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-2p4c-3q4q-p463
https://www.vulncheck.com/advisories/zebra-before-6.2.1-den…
https://www.vulncheck.com/advisories/zebra-before-6.2.1-denial-of-service-via-u…