{"id":"CVE-2026-123017","kind":"vulnerability","aliases":["CVE-2026-123017"],"related":[],"title":"GodotSteam: a peer value of 1 lets a player forge server-only gold grants","description":"GodotSteam 4.17 through 4.23.2 trusts the peer value of 1 to mean that a player is the server. A grant_gold(1000000) call can be forged.","summary":"GodotSteam, a Steam integration plugin for the Godot game engine, treats a peer ID of 1 as the game server. A connected player can therefore send a forged grant_gold(1000000) call and be credited with that amount.","severity":"medium","cvss":6.5,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["godot","godotsteam","multiplayer-games","package","steam"],"not_affected_if":["no-server-rpcs","single-player","versions-outside-range"],"how_to_check":"- Look for the GodotSteam addon in the project's `addons` folder and read its version.\n- Search the game's networking code for `grant_gold` or other server-only RPCs that do not verify the sender.","fix":"- GodotSteam `4.23.2` and earlier in the affected range (4.17 through 4.23.2) are vulnerable; the sources do not name a fixed version.","status":"open","published_at":"2026-11-05T07:17:24+00:00","first_seen_at":"2026-11-05T07:37:46+00:00","triaged_at":"2026-11-05T07:39:58+00:00","updated_at":"2026-11-05T07:39:58+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-11-05T07:39:58Z","model":"claude-haiku-5-5","output":{"fix":"- GodotSteam `4.23.2` and earlier in the affected range (4.17 through 4.23.2) are vulnerable; the sources do not name a fixed version.","reach":"network","title":"GodotSteam: a peer value of 1 lets a player forge server-only gold grants","impact":"medium","summary":"GodotSteam, a Steam integration plugin for the Godot game engine, treats a peer ID of 1 as the game server. A connected player can therefore send a forged grant_gold(1000000) call and be credited with that amount.","audience":"developers","category":"package","nicknames":[],"who_cares":["godot","godotsteam","steam","multiplayer-games"],"confidence":0.6,"fix_status":"unknown","needs_auth":"yes","worst_case":"a connected player grants themselves large amounts of in-game gold","analyst_note":"Check the GodotSteam release notes or the NVD entry for a fixed version and whether the peer ID check was changed.","how_to_check":"- Look for the GodotSteam addon in the project's `addons` folder and read its version.\n- Search the game's networking code for `grant_gold` or other server-only RPCs that do not verify the sender.","plain_action":"","needs_analyst":true,"not_affected_if":["single-player","no-server-rpcs","versions-outside-range"],"who_is_affected":"Multiplayer games built on GodotSteam 4.17 through 4.23.2 that use peer ID 1 to decide server-only actions such as granting currency. Single-player games and projects that do not use these RPCs are not affected by this flaw.","user_interaction":"no","needs_special_setup":"yes","severity_if_unknown":"medium"},"cost_usd":0.000708,"input_tokens":4184,"output_tokens":579,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-123017':18A,21A '-2026':17A,20A '1':6A,44B,76C '1000000':59B,88C '4.17':68C '4.23.2':70C 'amount':66B 'call':60B,89C 'connect':50B 'credit':63B 'cve':16A,19A 'engin':38B 'forg':10A,56B,92C 'game':26B,37B,47B 'godot':22B,36B 'godotsteam':1A,23B,29B,67C 'gold':14A,58B,87C 'grant':15A,57B,86C 'id':42B 'integr':32B 'let':7A 'mean':78C 'multiplay':25B 'multiplayer-gam':24B 'packag':27B 'peer':3A,41B,73C 'player':9A,51B,81C 'plugin':33B 'send':54B 'server':12A,48B,84C 'server-on':11A 'steam':28B,31B 'therefor':53B 'treat':39B 'trust':71C 'valu':4A,74C","nicknames":[],"mitigations":[],"who_affected":"Multiplayer games built on GodotSteam 4.17 through 4.23.2 that use peer ID 1 to decide server-only actions such as granting currency. Single-player games and projects that do not use these RPCs are not affected by this flaw.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"unknown","audience":"developers","plain_action":null,"pkeys":[],"ptokens":[],"labels":["godot","godotsteam","medium","multiplayergames","package","steam"],"campaign_type":null,"first_public_at":"2026-11-05T07:17:24+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","cvss_by":"cve@mitre.org","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-123017","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123017","severity":null,"published_at":"2026-11-05T07:17:24+00:00","modified_at":"2026-11-05T07:17:24+00:00","first_seen_at":"2026-11-05T07:37:46+00:00","fetched_at":"2026-11-05T07:37:46+00:00","note":null}],"documents":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}