Uncontrolled resource consumption vulnerability in the JSON plugin of Apache Struts. When an application is configured to populate actions from a JSON request body, the plugin reads that body into memory without bounding how much it will accept, so a single request can exhaust the heap and deny service to other users. The plugin's configurable JSON input length limit does not bound this read. The JSON plugin is an optional component; applications that do not use it, or use it without enabling JSON request-body handling, are not affected.
This issue affects Apache Struts: from 2.1.8 through 2.3.37, from 2.5.0 through 2.5.33, from 6.0.0 through 6.10.0, from 7.0.0 through 7.2.1.
Users are recommended to upgrade to version 6.11.0 or 7.3.0, which fixes the issue.
Metrics
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://cwiki.apache.org/confluence/display/WW/S2-072 |
|
History
Fri, 14 Aug 2026 16:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Apache
Apache struts |
|
| Vendors & Products |
Apache
Apache struts |
Fri, 14 Aug 2026 15:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
cvssV3_1
|
Fri, 14 Aug 2026 14:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Uncontrolled resource consumption vulnerability in the JSON plugin of Apache Struts. When an application is configured to populate actions from a JSON request body, the plugin reads that body into memory without bounding how much it will accept, so a single request can exhaust the heap and deny service to other users. The plugin's configurable JSON input length limit does not bound this read. The JSON plugin is an optional component; applications that do not use it, or use it without enabling JSON request-body handling, are not affected. This issue affects Apache Struts: from 2.1.8 through 2.3.37, from 2.5.0 through 2.5.33, from 6.0.0 through 6.10.0, from 7.0.0 through 7.2.1. Users are recommended to upgrade to version 6.11.0 or 7.3.0, which fixes the issue. | |
| Title | Apache Struts: Unbounded read of a JSON request body | |
| Weaknesses | CWE-400 | |
| References |
|
Status: PUBLISHED
Assigner: apache
Published:
Updated: 2026-08-14T14:38:07.397Z
Reserved: 2026-08-13T11:51:58.659Z
Link: CVE-2026-73633
Updated: 2026-08-14T14:38:03.686Z
Status : Received
Published: 2026-08-14T14:16:51.997
Modified: 2026-08-14T15:17:11.287
Link: CVE-2026-73633
No data.
OpenCVE Enrichment
Updated: 2026-08-14T16:30:05Z