Odaily Planet Daily reports, according to Bitcoin News monitoring, Electrum released version 4.8.3 on October 24, 2026, to fix a security vulnerability that has been exploited in real-world attacks. Malicious servers can show users forged transactions and trick them into signing transactions that pay funds to the attacker’s address when they attempt to accelerate the transaction using Replace-by-Fee (RBF); the attacker does not need access to the user’s private key. Electrum stated it has received two related reports, one of which resulted in a user losing bitcoins after increasing the fee, and recommends users update to version 4.8.3.
Electrum 4.8.3 Fixes Security Vulnerability Exploited in Real-World Attacks
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Summary
Electrum 4.8.3, released on October 24, 2026, addresses a security vulnerability affecting users. The flaw enabled malicious servers to display fraudulent transactions, tricking users into signing transactions sent to attacker addresses via RBF. Real-world assets (RWA) news coverage highlights the incident, noting that two users were affected, including one who lost Bitcoin after increasing transaction fees. Electrum urges all users to upgrade to version 4.8.3 immediately.
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