CVE-2026-105294 PUBLISHED

Legcord 1.1.0 through 1.3.0 Chromium Switch Injection via settings.setConfig

Assigner: VulnCheck
Reserved: 05.10.2026 Published: 05.10.2026 Updated: 05.10.2026

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 Vector: 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
CVSS Score: 9.1

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	High	Integrity	High	Integrity	None
Attack Requirements	Present	Availability	None	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS Score: 7.4

Attack Vector	Network	Scope	Unchanged
Attack Complexity	High	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	Legcord
Product	Legcord
Versions	Default: unaffected affected from 1.1.0 to 1.3.0 (incl.)

CVE-2026-105294 PUBLISHED

Legcord 1.1.0 through 1.3.0 Chromium Switch Injection via settings.setConfig

Metrics

Product Status

Credits

References

Problem Types