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.

CVSS v3 7.4 HIGH

7.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/Legcord/Legcord
https://github.com/Legcord/Legcord/blob/v1.3.0/src/discord/ipc.ts#L296-L299
https://github.com/Legcord/Legcord/blob/v1.3.0/src/main.ts#L277-L307
https://github.com/Legcord/Legcord/issues/1163
https://www.vulncheck.com/advisories/legcord-1.1.0-through-1.3.0-chromium-switch-injection-via-settings-setconfig

Configurations

No configuration.

History

05 Oct 2026, 01:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-05 01:16

Updated : 2026-10-06 16:08

NVD link : CVE-2026-105294

Mitre link : CVE-2026-105294

CVE.ORG link : CVE-2026-105294

JSON object : View

Products Affected

No product.

CWE

CWE-15

External Control of System or Configuration Setting

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