{"id":"CVE-2020-28923","aliases":["GHSA-v9mf-jgq3-c28h"],"url":"https://o3.security/vulnerability/CVE-2020-28923","summary":"Data Amplification in Play Framework","details":"An issue was discovered in Play Framework 2.8.0 through 2.8.4. Carefully crafted JSON payloads sent as a form field lead to Data Amplification. This affects users migrating from a Play version prior to 2.8.0 that used the Play Java API to serialize classes with protected or private fields to JSON.","published":"2020-12-03T17:15:13.287Z","modified":"2026-07-08T20:42:27.468053Z","cvss":{"score":2.7,"severity":"LOW","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"com.typesafe.play:play","fixedVersion":"2.8.5"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://www.playframework.com/security/vulnerability"},{"type":"ADVISORY","url":"https://www.playframework.com/security/vulnerability/CVE-2020-28923-ImproperRemovalofSensitiveInformationBeforeStorageorTransfer"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T20:42:27.468053Z"}}