Skip to content
fr Sign in
Not rated

CVE-2026-73633 Uncontrolled resource consumption vulnerability in the JSON plugin of Apache Struts

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.

Affected products and versions

Product Affected versions Fixed in
Apache Struts 7.0 7.0.0 → 7.2.1 No fix stated
Apache Struts 6.0 6.0.0 → 6.10.0 No fix stated
Apache Struts 2.5 2.5.0 → 2.5.33 No fix stated
Apache Struts 2.1 2.1.8 → 2.3.37 No fix stated

References

Timeline

  1. Published
  2. Last modified

Other CVEs of Apache Struts

The 33 CVEs of Apache Struts →
CVE-2026-104714 Concurrent execution using shared resource with improper synchronization ('race condition') vulnerability in Apache… Not rated CVE-2026-104713 Allocation of resources without limits or throttling vulnerability in the Apache Struts REST plugin Not rated CVE-2026-104712 Asymmetric resource consumption (amplification) vulnerability in Apache Struts Not rated CVE-2026-104711 Improper neutralization of special elements used in an expression language statement ('Expression Language Injection')… Not rated
Track this CVE