Description
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.
References
- www.cve.org/CVERecord ↗
- nvd.nist.gov/vuln/detail/CVE-2026-105294 ↗
- github.com/Legcord/Legcord ↗
- github.com/Legcord/Legcord/blob/v1.3.0/src/discord/ipc.ts ↗
- github.com/Legcord/Legcord/blob/v1.3.0/src/main.ts ↗
- github.com/Legcord/Legcord/issues/1163 ↗
- www.vulncheck.com/advisories/legcord-1.1.0-through-1.3.0-chromium-switch-injection-via-settings-setconfig ↗
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This product uses the NVD API but is not endorsed or certified by the NVD. CVSS scores do not establish exploitation.