GodotSteam: peer ID impersonation

GodotSteam

GodotSteam vulnerability allows any multiplayer peer to claim the server's peer ID, potentially leading to unauthorized access.

Do this now

No source names a fix yet: limit who can reach GodotSteam until one does.

First seen: 4 Nov 2026
Last update: 4 Nov 2026, 19:17 UTC
Source: news

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## GodotSteam: peer ID impersonation
Severity: unknown. Patch status: fix status unknown.
Affected: GodotSteam

GodotSteam vulnerability allows any multiplayer peer to claim the server's peer ID, potentially leading to unauthorized access.

## Steps
1. Search the repo, its CI and infra config for GodotSteam. If present, report the version in use and whether it's affected.
2. No source names a fix yet; check the vendor advisory. Until one ships: restrict network access to it.

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://seclists.org/oss-sec/2026/q4/518
https://pwned.coffee/i/godotsteam-peer-id-impersonation

Receipt

Exploitation: No known exploitation
Score: No CVSS published yet: severity unknown.
Last checked: 4 Nov 2026, 22:17 UTC

Sources: KEV – CVE record – Vendor –

Sources

seclists.org: GodotSteam 4.17 through 4.23.2: any multiplayer peer can claim the server's peer ID

Totalone coffee