Legcord 1.1.0 through 1.3.0 Chromium Switch Injection via settings.setConfig
25Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.1
exploitation probability
—
observed exploitation
nono source reports it
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.
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Affected products
Legcord · LegcordReferences
https://github.com/Legcord/Legcordhttps://github.com/Legcord/Legcord/blob/v1.3.0/src/discord/ipc.ts#L296-L299https://github.com/Legcord/Legcord/blob/v1.3.0/src/main.ts#L277-L307https://github.com/Legcord/Legcord/issues/1163https://www.vulncheck.com/advisories/legcord-1.1.0-through-1.3.0-chromium-switch-injection-via-settings-setconfig