NRDAX-T0207 - Pre-Verify Gossip Flood

Compute amplification · Consensus ingest · late bound · active · first seen 2026-07-04

provenance: Reproduced in NullRabbit's attack-reproduction pipeline

mechanism

CometBFT consensus DataChannel(0x21) ProposalMessage flood: valid-shape Proposal passes ValidateBasic but the RLock+queue path runs before deferred sig-verify - the N1.4 family HEAD (vote-flood + blocksync-flood are its siblings). NullRabbit-original consensus-reactor measurement.

live exposure

No exposure data. Slashr ↗ has no risk signal mapped to this technique yet — absence of data is not absence of exposure.

instances (2)

chain	primitive	fidelity	origin	reproducer (bundle)	source
cosmos	cometbft_proposal_flood	lab	NullRabbit Labs	cometbft_proposal_flood	github.com ↗
cosmos	cometbft_vote_flood	lab	NullRabbit Labs	cometbft_vote_flood	github.com ↗

related (Compute amplification)

NRDAX-T0006 - Async Runtime Blocking VM Execution active NRDAX-T0076 - Expensive Debug RPC Compute Amplification active NRDAX-T0088 - GetData Request Flood active NRDAX-T0100 - Handshake Crypto CPU Burn active NRDAX-T0139 - Legacy Sighash Quadratic CPU Blowup active NRDAX-T0143 - Malformed Field Gossip Before Validation active NRDAX-T0148 - Malformed KZG Proof Mismatch DoS active NRDAX-T0166 - Move Verifier Fixpoint CPU Exhaustion active

cite

https://nrdax.com/techniques/NRDAX-T0207

plain

NRDAX Registry. Technique NRDAX-T0207.

bibtex

@misc{nrdax_NRDAX_T0207,
  title = {Pre-Verify Gossip Flood (NRDAX-T0207)},
  howpublished = {NRDAX Registry},
  url = {https://nrdax.com/techniques/NRDAX-T0207},
}

json (csl)

{
  "id": "nrdax-NRDAX-T0207",
  "type": "dataset",
  "title": "Pre-Verify Gossip Flood (NRDAX-T0207)",
  "URL": "https://nrdax.com/techniques/NRDAX-T0207",
  "publisher": "NRDAX Registry"
}

badge

[![NRDAX-T0207 in the NRDAX registry](https://nrdax.com/badge/NRDAX-T0207.svg)](https://nrdax.com/techniques/NRDAX-T0207-pre-verify-gossip-flood)

use from the CLI

Retrieve or cite this technique from a script or the terminal with the NRDAX Python library & CLI.

Retrieve this technique

nrdax get NRDAX-T0207

Cite it (BibTeX)

nrdax cite NRDAX-T0207 --format bibtex

CLI guide → GitHub ↗