CVE-2026-104426
Zebra before 6.1.0 contains an inefficient algorithmic complexity vulnerability in…
- Risk score
- 40/100
- CVSS
- 5.9 v3.1
- Exploit chance (30 days)
- 0.3%
- Published
- 2 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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, sta…
- Affected
- See advisory
- Fix
- Upgrade the product to 6.1.0 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 5.9 medium
References
Original description
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.
Last activity 2 Oct 2026. Patch Forecast updates every hour.