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Vulnerability record · CVE-2020-28923 · published 3 December 2020

CVE-2020-28923: Lightbend play framework vulnerability

Lightbend · Play Framework

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.

2.7 CVSS 3.1 Low EPSS 0.97% · top 39.6%
2.7CVSS 3.1 base score, v2 4.0
0.97%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

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:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.playframework.com/security/vulnerability Vendor Advisory
https://www.playframework.com/security/vulnerability/CVE-2020-28923-ImproperRemovalofSensitiveInformationBeforeStorageor Vendor Advisory
https://www.playframework.com/security/vulnerability Vendor Advisory
https://www.playframework.com/security/vulnerability/CVE-2020-28923-ImproperRemovalofSensitiveInformationBeforeStorageor Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2014-3630Lightbend play framework xml external entity (xxe) vulnerabilityXML external entity (XXE) vulnerability in the Java XML processing functionality in Play before 2.2.6 and 2.3.x before 2.3.5 might allow remote attac…EPSS 2.9%7.5CVE-2022-31023Lightbend play framework error message information leak vulnerabilityPlay Framework is a web framework for Java and Scala. Verions prior to 2.8.16 are vulnerable to generation of error messages containing sensitive inf…EPSS 1.3%7.5CVE-2022-31018Lightbend play framework uncontrolled resource consumption vulnerabilityPlay Framework is a web framework for Java and Scala. A denial of service vulnerability has been discovered in verions 2.8.3 through 2.8.15 of Play's…EPSS 1.7%7.5CVE-2020-26882Lightbend play framework vulnerabilityIn Play Framework 2.6.0 through 2.8.2, data amplification can occur when an application accepts multipart/form-data JSON input.EPSS 1.4%7.5CVE-2020-26883Lightbend play framework vulnerabilityIn Play Framework 2.6.0 through 2.8.2, stack consumption can occur because of unbounded recursion during parsing of crafted JSON documents.EPSS 1.4%7.5CVE-2020-27196Lightbend play framework out-of-bounds write vulnerabilityAn issue was discovered in PlayJava in Play Framework 2.6.0 through 2.8.2. The body parsing of HTTP requests eagerly parses a payload given a Content…EPSS 1.4%7.5CVE-2019-17598Lightbend play framework inadequate encryption strength vulnerabilityAn issue was discovered in Lightbend Play Framework 2.5.x through 2.6.23. When configured to make requests using an authenticated HTTP proxy, play-ws…EPSS 0.70%7.5CVE-2018-13864Lightbend play framework path traversal vulnerabilityA directory traversal vulnerability has been found in the Assets controller in Play Framework 2.6.12 through 2.6.15 (fixed in 2.6.16) when running on…EPSS 3.4%

Source: NIST National Vulnerability Database (record CVE-2020-28923), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.