{"cve":"CVE-2020-28923","nvd":{"published":"2020-12-03T17:15:13.287","modified":"2026-06-17T03:10:49.983","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N","score":2.7},"cwes":[],"references":["https://www.playframework.com/security/vulnerability","https://www.playframework.com/security/vulnerability/CVE-2020-28923-ImproperRemovalofSensitiveInformationBeforeStorageorTransfer","https://www.playframework.com/security/vulnerability","https://www.playframework.com/security/vulnerability/CVE-2020-28923-ImproperRemovalofSensitiveInformationBeforeStorageorTransfer"],"products":["lightbend:play_framework"],"source":"nvd","synced_at":"2026-10-19T21:11:20.317016139+00:00"},"epss":{"cve":"CVE-2020-28923","score":0.00969,"percentile":0.61877,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-v9mf-jgq3-c28h","url":"https://osv.dev/vulnerability/GHSA-v9mf-jgq3-c28h","summary":"Data Amplification in Play Framework","modified":"2023-11-08T04:03:29.644045Z","packages":[{"ecosystem":"Maven","name":"com.typesafe.play:play","purl":"pkg:maven/com.typesafe.play/play","ranges":[">=2.8.0 <2.8.5"],"fixed":["2.8.5"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}