{"id":"CVE-2019-18954","aliases":["EUVD-2019-0778","GHSA-4x6v-rwh4-55jw"],"status":"published","title":"Pomelo allows external control of critical state data","description":"Pomelo v2.2.5 allows external control of critical state data. A malicious user input can corrupt arbitrary methods and attributes in template/game-server/app/servers/connector/handler/entryHandler.js because certain internal attributes can be overwritten via a conflicting name. Hence, a malicious attacker can manipulate internal attributes by adding additional attributes to user input.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01157,"percentile":0.67283,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-668"],"published":"2019-11-13T23:39:46Z","modified":"2026-10-20T10:50:51Z","fixes":[{"ecosystem":"npm","package":"pomelo","fixed_in":["2.2.7"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"pomelo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.7"}]}]},{"source":"osv","ecosystem":"npm","package":"pomelo","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.2.7"}]}]}],"products":[{"vendor":"netease","product":"pomelo"}],"references":[{"url":"https://github.com/cl0udz/vulnerabilities/tree/master/pomelo-critical-state-manipulation","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence","web"]},{"url":"https://github.com/NetEase/pomelo/issues/1149","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Third Party Advisory","report","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-18954","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-4x6v-rwh4-55jw"}],"sources":{"cve":[{"id":"CVE-2019-18954","description":"Pomelo v2.2.5 allows external control of critical state data. A malicious user input can corrupt arbitrary methods and attributes in template/game-server/app/servers/connector/handler/entryHandler.js because certain internal attributes can be overwritten via a conflicting name. Hence, a malicious attacker can manipulate internal attributes by adding additional attributes to user input.","status":"published","published":"2019-11-13T23:39:46Z","modified":"2024-08-05T02:02:39.866Z","updated_at":"2026-11-02T14:32:23.803059Z"}],"euvd":[{"id":"EUVD-2019-0778","description":"Pomelo v2.2.5 allows external control of critical state data. A malicious user input can corrupt arbitrary methods and attributes in template/game-server/app/servers/connector/handler/entryHandler.js because certain internal attributes can be overwritten via a conflicting name. Hence, a malicious attacker can manipulate internal attributes by adding additional attributes to user input.","status":"published","published":"2019-11-13T23:39:46Z","modified":"2024-08-05T02:02:39Z","updated_at":"2026-11-03T02:40:27.303586Z"}],"ghsa":[{"id":"GHSA-4x6v-rwh4-55jw","title":"Pomelo allows external control of critical state data","description":"Pomelo v2.2.5 allows external control of critical state data. A malicious user input can corrupt arbitrary methods and attributes in `template/game-server/app/servers/connector/handler/entryHandler.js` because certain internal attributes can be overwritten via a conflicting name. Hence, a malicious attacker can manipulate internal attributes by adding additional attributes to user input.","status":"published","published":"2019-12-02T18:16:34Z","modified":"2023-09-08T19:57:38Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-668"],"updated_at":"2026-11-02T14:37:03.287418Z"}],"nvd":[{"id":"CVE-2019-18954","description":"Pomelo v2.2.5 allows external control of critical state data. A malicious user input can corrupt arbitrary methods and attributes in template/game-server/app/servers/connector/handler/entryHandler.js because certain internal attributes can be overwritten via a conflicting name. Hence, a malicious attacker can manipulate internal attributes by adding additional attributes to user input.","status":"published","published":"2019-11-14T00:15:11.017Z","modified":"2026-06-17T02:25:38.27Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","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-668"],"updated_at":"2026-11-02T14:05:35.052973Z"}],"osv":[{"id":"CVE-2019-18954","description":"Pomelo v2.2.5 allows external control of critical state data. A malicious user input can corrupt arbitrary methods and attributes in template/game-server/app/servers/connector/handler/entryHandler.js because certain internal attributes can be overwritten via a conflicting name. Hence, a malicious attacker can manipulate internal attributes by adding additional attributes to user input.","status":"published","published":"2019-11-14T00:15:11.017Z","modified":"2026-10-20T10:50:51.362462089Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T15:44:11.673963Z"},{"id":"GHSA-4x6v-rwh4-55jw","title":"Pomelo allows external control of critical state data","description":"Pomelo v2.2.5 allows external control of critical state data. A malicious user input can corrupt arbitrary methods and attributes in `template/game-server/app/servers/connector/handler/entryHandler.js` because certain internal attributes can be overwritten via a conflicting name. Hence, a malicious attacker can manipulate internal attributes by adding additional attributes to user input.","status":"published","published":"2019-12-02T18:16:34Z","modified":"2023-11-08T04:01:26.949414Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-668"],"updated_at":"2026-11-02T15:46:37.528068Z"}]}}