{"id":"CVE-2026-105294","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-105294","summary":"Legcord 1.1.0 through 1.3.0 contains a configuration injection vulnerability that allows script in the Discord page to write any config key via the window.legcord settings.setConfig…","details":"Legcord 1.1.0 through 1.3.0 contains a configuration injection vulnerability that allows script in the Discord page to write any config key via the window.legcord settings.setConfig bridge. Attackers exploiting a Discord XSS can set additionalArguments to persistently add --proxy-server and --ignore-certificate-errors switches, routing all client traffic through an interception proxy.","published":"2026-10-05T01:16:28.923","modified":"2026-10-05T01:16:28.923","cvss":{"score":7.4,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://github.com/Legcord/Legcord"},{"type":"WEB","url":"https://github.com/Legcord/Legcord/blob/v1.3.0/src/discord/ipc.ts#L296-L299"},{"type":"WEB","url":"https://github.com/Legcord/Legcord/blob/v1.3.0/src/main.ts#L277-L307"},{"type":"WEB","url":"https://github.com/Legcord/Legcord/issues/1163"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/legcord-1.1.0-through-1.3.0-chromium-switch-injection-via-settings-setconfig"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-10-05T01:16:28.923"}}