by Kastro
Paper/Archive/CVE-2026-105293

CVE-2026-105293

Legcord Legcord — Legcord 1.1.0 through 1.3.0 Path Traversal via Theme IPC Handlers

EPSS 0.4%CVSS 9.2
critical.is priorityof 100
34
CVSS 9.2 (CNA)9.2 / 10 × 3027.6Not in CISA KEV+300.0EPSS percentile 31.4.314 × 206.3No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Legcord 1.1.0 through 1.3.0 contains a path traversal vulnerability in theme IPC handlers that allows script in the Discord page to escape the themes directory via unvalidated theme ids. Attackers running script in the Discord origin, such as through XSS, can abuse themes.folder, themes.uninstall, and themes.install to launch local executables, recursively delete directories, and write files outside the themes directory.

Affected

ProductAffectedFixed inSource
Legcord1.1.0 – 1.3.0–CNA

Scores by source

VulnCheck (CNA)9.2CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
VulnCheck (CNA)8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refgithub.com/Legcord/Legcord/issues/1163refgithub.com/Legcord/Legcordwriteupgithub.com/Legcord/Legcord/blob/v1.3.0/src/discord/ipc.ts#L201-L206writeupgithub.com/Legcord/Legcord/blob/v1.3.0/src/common/themes.ts#L269-L276writeupvulncheck.com/advisories/legcord-1.1.0-through-1.3.0-path-traversal-via-theme-ipc-handlers