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Crypto · October 24, 2026

Bitcoin Core speeds up security fixes as 44% of surveyed nodes run unsupported versions

5 sources →

Bitcoin Core has updated its security disclosure policy to accelerate the patching and reporting of vulnerabilities that are easily identifiable by artificial intelligence. Under the previous policy, medium- and high-severity flaws could remain under embargo for up to a year to allow node operators time to update; however, developers now argue that large language models (LLMs) have lowered the barrier for attackers to rediscover these bugs or spot silent fixes. Recent data indicates that approximately 43.6% of sampled Bitcoin Core nodes are currently running unsupported versions, highlighting a significant challenge in network maintenance as the project shifts toward faster public disclosures.

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Confirmed · 1

Backed by filings, on-chain data, official statements or several independent publishers.

  • Bitcoin Core updated its policy to allow backporting fixes for easily rediscovered bugs. (Bitcoin Core Maintainers)

Claimed · 2

Said by a company, project or person; not yet independently confirmed.

  • AI has drastically reduced the bar to find certain classes of security issues. (Antoine Poinsot)
  • 4,962 potential flaws were found in a review of 390 Bitcoin projects. (CoinDesk)

Speculation · 1

Price talk, forecasts or unnamed sources, quoted as someone else's view.

  • The percentage of unsupported nodes could reach 51.1% after the release of version 32. (CryptoSlate)

Reported by multiple outlets

  • Bitcoin Core merged a policy amendment on October 22/24 to speed up security fixes for 'easily discoverable' vulnerabilities.
  • The policy change was proposed by Chaincode Labs developer Antoine Poinsot.
  • The new policy ends long-term embargoes for bugs that LLMs can easily rediscover, opting instead for immediate backporting and advisory publication.
  • The previous policy could keep high-severity vulnerabilities under embargo for approximately one year.

Reported by only some outlets

  • A network snapshot from October 18 showed 3,671 of 8,422 sampled peers (43.6%) ran end-of-life release lines.
  • Version 32 of Bitcoin Core is expected to increase the percentage of unsupported nodes to 51.1%.
  • A review of 390 Bitcoin projects recently identified 4,962 potential flaws, including 85 critical ones, using AI assistance.

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