{"id":"DEBIAN-CVE-2026-117603","details":"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.","modified":"2026-11-02T16:00:07.229549664Z","published":"2026-10-27T14:16:40.233Z","upstream":["CVE-2026-117603"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-117603"}],"affected":[{"package":{"name":"electrum","ecosystem":"Debian:14","purl":"pkg:deb/debian/electrum?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.1+dfsg-1"}]}],"versions":["4.5.8+ds-6","4.5.8+ds-7","4.5.8+ds-8","4.6.2+dfsg-1","4.6.2+dfsg-2","4.6.2+dfsg-2~bpo13+1","4.7.0+dfsg-1","4.7.0+dfsg-1~bpo13+1","4.7.0+dfsg2-1","4.7.1+dfsg-1","4.7.2+dfsg-1","4.7.2+dfsg-1~bpo13+1","4.7.2+dfsg-2","4.8.1+dfsg-1~bpo13+1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-117603.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"}]}