CVEvulnerability
CVE-2026-105294
9.1 CRITICAL
Official page ↗
- Status
- Deferred
- Published
- 2026-10-05
- Last modified
- 2026-10-06
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 9.1 CRITICAL — 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 7.4 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- Weaknesses
- CWE-15
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.
Related
Weakness · CWE (1)
- CWE-15 External Control of System or Configuration Setting weakness
References
- https://github.com/Legcord/Legcord github.com
- https://github.com/Legcord/Legcord/blob/v1.3.0/src/discord/ipc.ts#L296-L299 github.com
- https://github.com/Legcord/Legcord/blob/v1.3.0/src/main.ts#L277-L307 github.com
- https://github.com/Legcord/Legcord/issues/1163 github.com
- https://www.vulncheck.com/advisories/legcord-1.1.0-through-1.3.0-chromium-switch-injection-via-settings-setconfig www.vulncheck.com