Vulnerability record
CVE-2026-125358
The short answer
CVE-2026-125358 affects rehan-remade universal-modder and is rated high (CVSS 7.2). It is not in CISA's KEV catalog; EPSS puts the chance of exploitation in the next 30 days at 0.18%.
What it is
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.
Weakness: CWE-1385.
Severity
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Exploited (CISA KEV)
Not listed
CISA lists confirmed exploitation only
EPSS, next 30 days
0.18%
Higher than 8% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Attack requirements
- None
- Privileges required
- None
- User interaction
- Passive
- Confidentiality impact
- None
- Integrity impact
- High
- Availability impact
- High
Affected products
universal-modder. NVD's record lists the exact affected versions.
References
- github.com/rehan-remade/universal-modder/blob/edf45f6a26cb047886d9d7bcba392c328fc3d317/examples/minecraft-gta5-passthrough/mc/src/client/java/dev/rehan/passthrough/client/HostLink.java#L54-L72
- github.com/rehan-remade/universal-modder/commit/e88f6876745427321eb755ebc98276063a962d8a
- github.com/rehan-remade/universal-modder/security/advisories/GHSA-wjf6-3h6v-4gq9
- www.vulncheck.com/advisories/universal-modder-before-e88f687-cross-site-websocket-command-execution-via-hostlink
Questions
Is CVE-2026-125358 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog as of 2026-11-11. FIRST's EPSS estimates a 0.18% chance of exploitation in the next 30 days.
How do I fix CVE-2026-125358?
Follow the vendor advisory in the references below. NVD lists the affected versions under its configurations.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Received. The description is NVD's text, quoted as published.
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