{"id":"CVE-2020-28923","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.","aliases":["GHSA-v9mf-jgq3-c28h"],"modified":"2026-04-11T23:13:16.888582Z","published":"2020-12-03T17:15:13.287Z","references":[{"type":"ADVISORY","url":"https://www.playframework.com/security/vulnerability"},{"type":"ADVISORY","url":"https://www.playframework.com/security/vulnerability/CVE-2020-28923-ImproperRemovalofSensitiveInformationBeforeStorageorTransfer"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/playframework/playframework","events":[{"introduced":"3c008185a851c26c8cf82ee46ddb0882086fce7b"},{"last_affected":"002bfafc1426539234ee2546e0aec34f351bb03f"}],"database_specific":{"cpe":"cpe:2.3:a:lightbend:play_framework:*:*:*:*:*:*:*:*","source":"CPE_FIELD","extracted_events":[{"introduced":"2.8.0"},{"last_affected":"2.8.4"}]}}],"versions":["2.8.0","2.8.1","2.8.2","2.8.3","2.8.4"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-28923.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N"}]}