Bitcoin● Neutral

Bitcoin wallet flaw let attackers swap payments when users sped them up

TradingGain Newsroom·4d ago·26 Oct 2026, 05:15 UTC

A bug in a bitcoin wallet let rogue servers replace real transactions with fake ones when users tried to speed up payments. The attackers then waited for users to approve higher fees. At least one person lost bitcoin before developers patched the flaw, so wallet security is a risk traders should keep in mind.

BTCAt the time of writing, Bitcoin traded at $80,145 (-0.8% in 24h).Live price →

Why it matters

Attackers swapped genuine transactions for fake ones inside the wallet software.
The attack targeted users who tried to speed up payments by approving higher fees.
At least one user lost bitcoin before the flaw was patched.

What to watch next

Whether developers confirm the patch is complete and report any further losses linked to the flaw.

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This brief is written by TradingGain from public reporting by CoinDesk.Read original ↗

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TradingGain News summarises public reports in our own words and always links to the original source. Market Data stories are generated automatically from public exchange data. Nothing on this page is financial advice; always do your own research and use a stop-loss.