medium5.9
CVE-2026-104426
Zebra before 6.1.0 contains an inefficient algorithmic complexity vulnerability in remaining_transaction_value that clones the entire block-level spent-UTXO ma…
Impact
Zebra before 6.1.0 contains an inefficient algorithmic complexity vulnerability in remaining_transaction_value that clones the entire block-level spent-UTXO map per transaction during contextual verification. Attackers can mine or seed the mempool with roughly 26,000 minimal single-input transactions in one block, stalling every validating node for over 52 seconds.
Affected products
| Product | Affected versions |
|---|---|
| Zebra | before 6.1.0 |
Versions were read from the advisory text. No structured product data has been published for this record yet.