Bitcoin Core will now fast-track fixes for bugs AI can find with one prompt: what it means for your bitcoin

The developers behind Bitcoin Core, the program that powers most of the computers keeping the bitcoin network running, have changed how they handle security flaws. Bugs that an AI model could easily find will now be fixed and announced quickly instead of kept quiet for months. Here is what changed, why, and what it means if you hold bitcoin.

What changed

On October 22, 2026, Bitcoin Core maintainers merged pull request #1281, titled "Update security policy for easy-to-find vulnerabilities". Antoine Poinsot, a developer at Chaincode Labs, opened it on October 16. CoinDesk and Decrypt were among the outlets that reported it on October 23.

The new rule adds a label. When a vulnerability is reported, the maintainers can now class it as easily discoverable, which the policy reserves for flaws that take very little effort to uncover; its example is a single basic question to an AI chatbot. For those bugs, the project will ship a point release (a small maintenance update) with the fix for every major version it still supports, quickly, and publish a security advisory at the same time. The usual waiting periods no longer apply to them.

Bitcoin Core maintains its latest three major versions. Right now those are the 31.x, 30.x and 29.x lines, and the newest release on the download page is 31.1. The next major version, 32.0, is on the way; once it ships, the 29.x line reaches end of life.

How it worked before

Every reported vulnerability is still graded as low, medium, high or critical. For bugs that are not easily discoverable, the old timetable stays in place:

• Low severity: made public a fortnight after the next big release that fixes them.
• Medium and high severity: made public a fortnight after the oldest affected version stops being supported, which the project puts at roughly a year after the fix first shipped.
• Critical: handled case by case, outside the standard policy.

The point of the long wait was to let the thousands of people who run nodes, the computers that check every bitcoin transaction, upgrade before attackers learned where the holes were. Bitcoin has a famously slow upgrade culture, so a quiet fix followed by a late explanation made sense when finding bugs took real skill.

Why AI changed the math

In the proposal, Poinsot said the project had seen more reports of flaws that are easy to find or rediscover. He wrote: "This is largely due to LLMs drastically reducing the bar to find certain classes of issues or identify covert fixes." In other words, AI chatbots can now spot both the bug and a fix that was slipped in quietly.

His conclusion was that for these bugs, a long embargo does little good. In the proposal he wrote that the embargo "achieves little but it delays the availability of a fixed release." If anyone with a chatbot can find a flaw, keeping it secret mainly keeps the fix away from honest users.

The change follows a busy summer. CoinDesk reported in August that a volunteer group of 16 developers, which it now calls the Bitcoin Red Team, had pointed AI models at 390 bitcoin projects and logged 4,962 potential flaws, 85 of them rated critical. Those were reports, not all confirmed bugs. Decrypt notes that AI-surfaced bugs also hit Lightning software and hardware wallets this year.

The new approach has a cost, and the developers said so. Poinsot acknowledged that fixes will get less "bake time", meaning less testing in development before release. According to CoinDesk, no bug had been flagged under the new rule as of October 23.

What this means for you

• If you only hold bitcoin, nothing changes. This is a policy about when fixes are released, not a flaw in bitcoin itself. Coins on an exchange, in a phone wallet or on a hardware wallet are not affected by it.
• Keep your own wallet software current. Update phone and desktop wallets through the official app store, and hardware wallet firmware only through the maker's official app. Our hardware wallet comparison lists this year's incidents by maker.
• If you run a node, plan for more updates. Expect point releases with less notice. Bitcoin Core posts security and release notices on its blog and RSS feed (its announcements mailing list is currently not available), and it recommends running the latest maintenance release of the newest major version you can.
• Download only from bitcoincore.org, and verify. The download page calls verification optional but highly recommended, because a tampered copy can lead to loss of funds. It publishes SHA256 checksums and signatures for every release.
• Never type your seed phrase to "fix" anything. No update, advisory or support agent needs it. See our guide to phishing and wallet drainers.

The takeaway

AI has made finding software bugs cheap for attackers and defenders alike. Bitcoin Core's answer is to stop hiding flaws that anyone can find and get fixes out faster, trading some testing time for speed. For most holders the practical lesson is simple: keep your wallet updated from official sources, ignore "urgent update" links, and never share your seed phrase. This is education, not financial advice, and it reflects Bitcoin Core's published policy as of October 24, 2026.

Published October 24, 2026 by Dave McNaught. Educational content, not financial, legal or tax advice. Spot an error? Request a correction.

About the author

Dave McNaught

Dave McNaught has worked in IT since 1999 and founded All Business Technologies (ABT) in 2003, a Boston-area firm providing Managed IT, Cybersecurity, Managed AI, Web Design and App Development. He publishes The Crypto Guide.

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