Out-of-bounds Write in Play Framework

published 2020-11-06 6 y ago modified 2026-06-17 4 mo ago also GHSA-h48w-c35p-6m8x , EUVD-2022-1032

cvss: 7.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.4%; EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits: 0; none known

An 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-Type header. A deep JSON structure sent to a valid POST endpoint (that may or may not expect JSON payloads) causes a StackOverflowError and Denial of Service.

Patch / fix

fixed in 2 links 1

maven com.typesafe.play:play 2.7.6, 2.8.3
maven com.typesafe.play:play-java 2.7.6, 2.8.3

github.com/playframework/playframework#10321 pull request

Exploit prediction

1.40% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P
GitHub	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem	package	affected	fixed in
maven	com.typesafe.play:play	>=2.6.0, <2.7.6 >=2.8.0, <2.8.3	2.7.6 2.8.3
maven	com.typesafe.play:play-java	>=2.6.0, <2.7.6 >=2.8.0, <2.8.3	2.7.6 2.8.3

Classification

Weakness

CWE-787 Out-of-bounds Write

References

github.com /playframework/playframework/pull/10321
web
playframework.com /security/vulnerability
vendor-advisory
playframework.com /security/vulnerability/CVE-2020-27196-DosViaJsonStackOverflow
web, vendor-advisory
nvd.nist.gov /vuln/detail/CVE-2020-27196
advisory

Sources

Fencer Vulns 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.

Summary