CVE-2020-28923 json
Data Amplification in Play Framework
published 5y ago modified 4mo ago also GHSA-v9mf-jgq3-c28h , EUVD-2022-1198
- cvss
- 2.7
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 62%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- maven com.typesafe.play:play 2.8.5
Is CVE-2020-28923 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
0.97% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 2.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:P/I:N/A:N |
| GitHub | 3.1 | 2.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | com.typesafe.play:play | >=2.8.0, <2.8.5 |
2.8.5 |
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
playframework.com
/security/vulnerability
web, vendor-advisory
-
playframework.com
/security/vulnerability/CVE-2020-28923-ImproperRemovalofSensitiveInformationBeforeStorageorTransfer
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-28923
advisory
Sources
- CVE List CVE-2020-28923
- GitHub Advisory GHSA-v9mf-jgq3-c28h
- NVD CVE-2020-28923
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.