CVE-2026-105294

high

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.legc…

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

7.4

7.4 (CVSS v3.1)

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

Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)

Timeline (UTC)

Published: 2026-10-05 01:16

Modified: 2026-10-06 16:08

NVD status: Deferred

Last synced 2 days ago

Verified against the source API 2026-10-27 06:57 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

Not reported by the source (unknown — not "none").

Weakness classification (CWE)

CWE-15

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

No vendor advisory or patch reference tagged by NVD. Check the references below.

References

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

Data sources

NVD CVE API 2.0 — fetched 2026-10-27 06:57 UTC · record ↗

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