CVE-2026-125358 | BDVDB-2026-402602 Detail
rehan-remadeuniversal-modder
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.
Impact#
Per CVSS v3.1: confidentiality impact none, integrity impact high, availability impact high. Attack vector: network.
Weaknesses#
- CWE-1385 Missing Origin Validation in WebSockets
References#
- https://github.com/rehan-remade/universal-modder/security/advisories/GHSA-wjf6-3h6v-4gq9
- https://github.com/rehan-remade/universal-modder/commit/e88f6876745427321eb755ebc98276063a962d8a
- https://github.com/rehan-remade/universal-modder/blob/edf45f6a26cb047886d9d7bcba392c328fc3d317/examples/minecraft-gta5-passthrough/mc/src/client/java/dev/rehan/passthrough/client/HostLink.java#L54-L72
- https://www.vulncheck.com/advisories/universal-modder-before-e88f687-cross-site-websocket-command-execution-via-hostlink
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.