NRDAX-T0148 - Malformed KZG Proof Mismatch DoS

Compute amplification · Consensus ingest · no bound · active · first seen 2026-07-07

provenance: Reproduced in NullRabbit's attack-reproduction pipeline

mechanism

CVE-2026-22868 (CVSS 7.5): a batch of EIP-4844 type-3 blob txs announced then delivered (PooledTransactions) with structurally-valid KZG sidecars whose commitment/proof (over blob A) mismatch the carried blob (B) - geth <1.16.8 runs the full KZG proof pairing on EVERY tx in the batch before any validity check, so a malicious peer forces per-tx cryptographic verification → CPU exhaustion/crash. Fixed abeb78c (break + disconnect on first KZG failure; core/txpool/validation.go + eth/fetcher/tx_fetcher.go)

live exposure

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

instances (1)

chain	primitive	fidelity	origin	reproducer (bundle)	source
ethereum	geth_blob_kzg_dos	lab	reverse-engineered-cve	geth_blob_kzg_dos	GHSA-mq3p-rrmp-79jg ↗

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-T0166 - Move Verifier Fixpoint CPU Exhaustion active NRDAX-T0184 - Orphan Tx Resolution CPU Amplification active

cite

https://nrdax.com/techniques/NRDAX-T0148

plain

NRDAX Registry. Technique NRDAX-T0148.

bibtex

@misc{nrdax_NRDAX_T0148,
  title = {Malformed KZG Proof Mismatch DoS (NRDAX-T0148)},
  howpublished = {NRDAX Registry},
  url = {https://nrdax.com/techniques/NRDAX-T0148},
}

json (csl)

{
  "id": "nrdax-NRDAX-T0148",
  "type": "dataset",
  "title": "Malformed KZG Proof Mismatch DoS (NRDAX-T0148)",
  "URL": "https://nrdax.com/techniques/NRDAX-T0148",
  "publisher": "NRDAX Registry"
}

badge

[![NRDAX-T0148 in the NRDAX registry](https://nrdax.com/badge/NRDAX-T0148.svg)](https://nrdax.com/techniques/NRDAX-T0148-malformed-kzg-proof-mismatch-dos)

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-T0148

Cite it (BibTeX)

nrdax cite NRDAX-T0148 --format bibtex

CLI guide → GitHub ↗