CVE-2026-123017

{
  "id": "CVE-2026-123017",
  "sourceIdentifier": "[email protected]",
  "published": "2026-11-05T07:17:24.450",
  "lastModified": "2026-11-05T07:17:24.450",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "godotsteam",
          "product": "GodotSteam",
          "defaultStatus": "unknown",
          "modules": [
            "SteamMultiplayerPeer"
          ],
          "programFiles": [
            "src/godotsteam_multiplayer_peer.cpp",
            "src/steam_packet_peer.cpp"
          ],
          "programRoutines": [
            {
              "name": "SteamMultiplayerPeer::upgrade_peer"
            },
            {
              "name": "SteamPacketPeer::set_peer_id"
            }
          ],
          "repo": "https://codeberg.org/godotsteam/godotsteam",
          "versions": [
            {
              "version": "4.17.0",
              "lessThanOrEqual": "4.23.2",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.5
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-290"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://axeghost.offprint.app/a/3mzhxoqpnh423-any-networked-co-player-can-act-as-the-server-in-a-godotsteam-game",
      "source": "[email protected]"
    },
    {
      "url": "https://codeberg.org/godotsteam/godotsteam",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/bitbutter/godot-security-pocs/tree/main/2026-11-godotsteam-peer-id-claim",
      "source": "[email protected]"
    },
    {
      "url": "https://www.openwall.com/lists/oss-security/2026/11/04/11",
      "source": "[email protected]"
    }
  ]
}