{"id":"CVE-2018-13877","aliases":["EUVD-2018-5811","GHSA-255m-v9ff-ggrc"],"status":"published","title":"The doPayouts() function of the smart contract implementation for MegaCryptoPolis, an Ethereum...","description":"The doPayouts() function of the smart contract implementation for MegaCryptoPolis, an Ethereum game, has a Denial of Service vulnerability. If a smart contract that has a fallback function always causing exceptions buys a land, users cannot buy lands near that contract's land, because those purchase attempts will not be completed unless the doPayouts() function successfully sends Ether to certain neighbors.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01054,"percentile":0.64605,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2018-08-06T20:00:00Z","modified":"2026-06-17T01:40:18Z","products":[{"vendor":"megacryptopolis","product":"megacryptopolis"}],"references":[{"url":"https://medium.com/coinmonks/denial-of-service-dos-attack-on-megacryptopolis-an-ethereum-game-cve-2018-13877-cdd7f7ef8b08","tags":["x_refsource_MISC","x_transferred","Broken Link"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-13877"},{"url":"https://github.com/advisories/GHSA-255m-v9ff-ggrc"}],"sources":{"cve":[{"id":"CVE-2018-13877","description":"The doPayouts() function of the smart contract implementation for MegaCryptoPolis, an Ethereum game, has a Denial of Service vulnerability. If a smart contract that has a fallback function always causing exceptions buys a land, users cannot buy lands near that contract's land, because those purchase attempts will not be completed unless the doPayouts() function successfully sends Ether to certain neighbors.","status":"published","published":"2018-08-06T20:00:00Z","modified":"2024-08-05T09:14:47.335Z","updated_at":"2026-11-02T14:35:07.01498Z"}],"euvd":[{"id":"EUVD-2018-5811","description":"The doPayouts() function of the smart contract implementation for MegaCryptoPolis, an Ethereum game, has a Denial of Service vulnerability. If a smart contract that has a fallback function always causing exceptions buys a land, users cannot buy lands near that contract's land, because those purchase attempts will not be completed unless the doPayouts() function successfully sends Ether to certain neighbors.","status":"published","published":"2018-08-06T20:00:00Z","modified":"2024-08-05T09:14:47Z","updated_at":"2026-11-03T02:39:48.313733Z"}],"ghsa":[{"id":"GHSA-255m-v9ff-ggrc","title":"The doPayouts() function of the smart contract implementation for MegaCryptoPolis, an Ethereum...","description":"The doPayouts() function of the smart contract implementation for MegaCryptoPolis, an Ethereum game, has a Denial of Service vulnerability. If a smart contract that has a fallback function always causing exceptions buys a land, users cannot buy lands near that contract's land, because those purchase attempts will not be completed unless the doPayouts() function successfully sends Ether to certain neighbors.","status":"published","published":"2022-05-14T02:21:24Z","modified":"2023-02-02T05:06:00Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:52:13.176189Z"}],"nvd":[{"id":"CVE-2018-13877","description":"The doPayouts() function of the smart contract implementation for MegaCryptoPolis, an Ethereum game, has a Denial of Service vulnerability. If a smart contract that has a fallback function always causing exceptions buys a land, users cannot buy lands near that contract's land, because those purchase attempts will not be completed unless the doPayouts() function successfully sends Ether to certain neighbors.","status":"published","published":"2018-08-06T20:29:01.443Z","modified":"2026-06-17T01:40:18.77Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:04:35.310988Z"}]}}