CVE Watch2 de nov. de 2026

CVE-2026-117603

Electrum before 4.7.2 contains a spending limit bypass vulnerability in the Nostr Wallet Connect plugin that allows malicious NWC clients to

CVSS

4.3

Média

EPSS

0.2%

KEV

—

Exploit Today

0-100

Publicado: 27 de out. de 2026 · Última mod.: 2 de nov. de 2026 · CWE-367

EPSS · 30d

0.2%EPSS · 30 dias0.2%

2026-10-282026-11-07

Descrição técnica

Electrum before 4.7.2 contains a spending limit bypass vulnerability in the Nostr Wallet Connect plugin that allows malicious NWC clients to exceed daily_limit_sat by exploiting non-atomic budget checks and millisatoshi truncation. Attackers can send concurrent pay_invoice requests that pass budget_allows_spend() before add_to_budget() runs, or repeatedly pay msat amounts that are floored to whole satoshis, to drain funds beyond the limit.

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