CVE-2026-104429
6.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Summary
Zebra (zebrad) 5.0.0 before 6.0.0-rc.0 does not apply its per-peer mempool admission cap to transactions received as direct P2P tx messages, because these are queued without the sending peer recorded as their source. A remote inbound peer can push many unique transactions to occupy a disproportionate share of mempool admission slots, crowding out honest peers' transaction relay.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| ZcashFoundation | zebra | 0 < 6.0.0-rc.0 | affected |
| ZcashFoundation | zebra | 6.0.0-rc.0 | unaffected |
Weaknesses
- CWE-770: Allocation of Resources Without Limits or Throttling
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: partial
References
- https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-m9xx-8rcj-vmgp
- https://www.vulncheck.com/advisories/zebra-before-6.0.0-rc.0-per-peer-mempool-admission-bypass-via-p2p-tx-messages
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