November 13, 2026

CVE Watchtower

CVE-2026-125358rehan-remade universal-modder < e88f6876745427321eb755ebc98276063a962d8a

NVD

Vulnerability Summary

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.
Severity Level
HIGH(7.2)
Published Date
Nov 9, 2026
Last Modified
Nov 13, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.19%Probability
Root Weakness (CWE)
CWE-1385 ↗
See the MITRE CWE entry for the full definition of this weakness.
CVSS v4.0 Base Metrics — Score 7.2 (HIGH)
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
Attack VectorNetwork
Attack ComplexityLow
Attack RequirementsNone
Privileges RequiredNone
User InteractionPassive
Confidentiality (Vulnerable System)None
Integrity (Vulnerable System)High
Availability (Vulnerable System)High
Confidentiality (Subsequent System)None
Integrity (Subsequent System)None
Availability (Subsequent System)None
Show CVSS v3.x metrics (score 8.1)
CVSS v3.1 Base Metrics — Score 8.1 (HIGH)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged
ConfidentialityNone
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • rehan-remade universal-modder < e88f6876745427321eb755ebc98276063a962d8a
Patched Versions
  • rehan-remade universal-modder e88f6876745427321eb755ebc98276063a962d8a

What to do

Plan remediation soon. No exploitation is confirmed yet, but the severity is high.

  1. Check whether you run rehan-remade universal-modder < e88f6876745427321eb755ebc98276063a962d8a and which version.
  2. Update to a patched version listed above, then confirm the new version.

Timeline

  • Nov 9, 2026Published
  • Nov 13, 2026Record last modified

Score, severity and exploitation changes are tracked from the day Watchtower started logging them.

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External References

Data last checked: Nov 13, 2026 18:23 UTC