CVE-2026-105294

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 Oct 5, 2026
  • CVSS 9.1 critical
  • 0.2% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-105294 at the National Vulnerability Database