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TI-2026-67728 Aliases CVE-2026-105294GHSA-3q64-f25r-4v38

Legcord config injection lets page script add Chromium proxy switches

Priority LOW 38CWE-15Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Legcord from 1.1.0 through 1.3.0 contains a configuration injection flaw (CWE-15) in its window.legcord settings.setConfig bridge. Script running in the Discord page can write any config key, so an attacker who exploits a Discord XSS can set additionalArguments. This persistently adds --proxy-server and --ignore-certificate-errors switches, routing all client traffic through an interception proxy.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00189 8th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LegcordLegcord1.1.0 – 1.3.0—No fix listedCNA
  • Legcord VendorLegcord Affected 1.1.0 – 1.3.0 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Legcord.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

  1. 2026-10-05 Threatist record created from CVE-2026-105294
  2. 2026-10-05 Alias added: GHSA-3q64-f25r-4v38
  3. 2026-10-05 Priority changed: MEDIUM → LOW
  4. 2026-10-06 CISA SSVC decision points changed

References

Other 4

  • TI-2026-67727 Path traversal in Legcord theme handlers lets scripts write files CVSS 4.0CRITICAL 9.2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences