CVE-2026-125358

Universal-modder before e88f687 Cross-Site WebSocket Command Execution via HostLink

Published Nov 9, 2026 CVSS 4.0 · 7.2 High EPSS < 1% KEV · Not listed
Description
Universal-modder before commit e88f6876745427321eb755ebc98276063a962d8a contains a missing WebSocket Origin validation vulnerability in the HostLink class of its passthrough example mods that allows remote attackers to execute Minecraft commands. Any web page open in the player's browser can connect cross-site to the unauthenticated loopback WebSocket and send cmd messages that WorldBridge.command() runs with operator authority.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Rehan-remade
Rehan-remade universal-modder
Vendors & Products Rehan-remade
Rehan-remade universal-modder
Type Values Removed Values Added
Description Universal-modder before commit e88f6876745427321eb755ebc98276063a962d8a contains a missing WebSocket Origin validation vulnerability in the HostLink class of its passthrough example mods that allows remote attackers to execute Minecraft commands. Any web page open in the player's browser can connect cross-site to the unauthenticated loopback WebSocket and send cmd messages that WorldBridge.command() runs with operator authority.
Title Universal-modder before e88f687 Cross-Site WebSocket Command Execution via HostLink
Weaknesses CWE-1385
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H'}

cvssV4_0

{'score': 7.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Nov 13, 2026, 1:44 PM
Reserved
Nov 9, 2026, 10:02 PM
Status
Deferred
Published
Nov 10, 2026, 12:17 AM
Modified
Nov 12, 2026, 9:09 PM