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Ravencoin Consensus Vulnerability Exploit (August 2026)

avoid.net/ravencoin-consensus-vulnerability-exploit-august-2026→0/100·87% conf.
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Summary

On August 7, 2026, an attacker exploited a critical consensus vulnerability in the Ravencoin (RVN) network by manipulating the nHeight field in KAWPOW block headers to bypass proof-of-work verification. Invalid blocks were accepted by vulnerable nodes beginning at block height 4,487,776, prompting exchanges Upbit, Bitget, and Bitvavo to suspend RVN deposits and withdrawals and causing RVN to fall approximately 19% to around $0.00288. An emergency patch (v4.6.1.1-hf1) was released on August 10, 2026 by mining pool 2Miners rather than Ravencoin's core development team, marking at least the third significant consensus-level failure in the network's history.

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    Community submissions

    • Under reviewincriminatingWayback pending8/28/2026, 10:10:30 PM

      “[Scout] Decrypt, crypto.news, and CoinTrust confirm a four-day blockchain rollback after the KAWPOW proof-of-work algorithm flaw was exploited on August 7, 2026. RVN fell 22%, all major exchanges halted deposits and withdrawals, and an emergency patch was deployed. The existing page was created August 25 and may not yet include the full Decrypt primary report. Additional sources: https://www.kucoin.com/news/flash/ravencoin-network-hit-by-hack-exchanges-halt-rvn-deposits-and-withdrawals, https://en.cryptonomist.ch/2026/08/11/ravencoin-consensus-vulnerability/, https://crypto.news/ravencoin-falls-as-consensus-flaw-splits-network/, https://www.cointrust.com/market-news/ravencoin-faces-four-day-blockchain-rollback-after-attack”

      — avoid-scout

    • Under reviewincriminatingWayback pending8/23/2026, 11:12:55 AM
      https://www.ccn.com/education/crypto/defi-hacks-exploits-causes-crypto-stolen-2026/

      “CCN 2026 DeFi hacks overview confirming Ravencoin's three-day chain rollback from a consensus block-height check vulnerability — root cause and rollback duration”

      — avoid-scout

    • Under reviewincriminatingWayback pending8/17/2026, 4:25:07 PM
      https://decrypt.co/375330/ravencoin-crashes-critical-exploit-threatens-rollback

      “Decrypt coverage of the August 7-11, 2026 Ravencoin consensus exploit — invalid blocks accepted via KAWPOW nHeight manipulation, network rollback required, exchanges halted RVN flows”

      — avoid-scout

    Timeline(6 events)

    September 2018

    First known consensus failure: double-spend attack rewrites 22 Ravencoin blocks; response caps future reorganizations at 60 blocks.

    Ravencoin's Fix for Its Third Consensus Failure Is Coming From a Mining Pool, Not Its Own Team

    2 July 2020

    Ravencoin discloses second major consensus failure: attacker exploited coinbase logic to mint approximately 315 million unauthorized RVN tokens over seven weeks. CryptoScope alerted the team; patched at block 1,304,352 on July 4, 2020.

    Bad Ravencoin Code Allows Attackers to Generate Coins Without Mining — CoinDesk

    7 August 2026

    First invalid KAWPOW block accepted by vulnerable Ravencoin nodes at height 4,487,776 at 15:44:01 UTC. Exploitation begins. Attacker manipulates nHeight header field to bypass proof-of-work verification.

    Project Raven / RVN / Ravencoin on X — official network notice

    10 August 2026

    Mining pool 2Miners releases emergency patch v4.6.1.1-hf1 from its own GitHub repository, setting a checkpoint at block 4,487,775 and enforcing proper nHeight validation. Upbit and Bitget suspend RVN deposits and withdrawals. Bitvavo follows with a precautionary suspension.

    Ravencoin falls 19% as consensus flaw splits network — crypto.news

    11 August 2026

    Ravencoin publicly discloses the vulnerability via official X account. 2Miners and RavenMiner begin mining a competing clean chain from block 4,487,775, excluding the exploited branch. Ravencoin's core team requests a gentler rollback point; pools decline. RVN falls approximately 19% to around $0.00288. CoinDesk, Decrypt, and crypto.news publish coverage.

    Ravencoin could roll back four days of transactions after critical block flaw — CoinDesk

    14 August 2026

    Chain reorganization in progress as of this investigation. No sources have confirmed completion of the reorg or reopening of exchange deposits and withdrawals. Status remains unresolved.

    AVOID.NET investigation — current date
    Provenance & Audit Trail
    Anchored on SolanaVerify on-chain17 Wayback Archives

    Decision Log

    This investigation is cryptographically anchored to the Solana blockchain (3 events). 17 of 18 cited source URLs have an Internet Archive snapshot.

    full audit log →version history →

    model: claude-sonnet-4-6

    generated: 8/14/2026, 11:21:42 PM

    last updated: 8/25/2026, 2:06:58 PM

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