CVE-2026-104713: CWE-770 Allocation of Resources Without Limits or Throttling in Apache Software Foundation Apache Struts
Description
Allocation of resources without limits or throttling vulnerability in the Apache Struts REST plugin. A request body is read into memory without any bound on how much will be accepted, so a single request can cause the server to allocate memory in proportion to its size, exhausting the Java heap and denying service to other users. No additional setting has to be enabled. Applications that do not use the REST plugin 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 6.11.0, from 7.0.0 through 7.3.0. Users are recommended to upgrade to version 6.12.0 or 7.4.0, which fixes the issue.
Affected software
Apache Software Foundation
Apache Struts
pkg:maven/Apache Software Foundation/org.apache.struts:struts2-rest-pluginRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-770) in the Apache Struts REST plugin occurs because the plugin reads the request body into memory without any limit on its size. This lack of throttling allows a single request to consume excessive memory, potentially exhausting the Java heap and causing denial of service to other users. The issue affects Apache Struts versions from 2.1.8 through 2.3.37, 2.5.0 through 2.5.33, 6.0.0 through 6.11.0, and 7.0.0 through 7.3.0. The vulnerability does not require any additional settings to be enabled and only impacts applications using the REST plugin. The vendor has fixed the issue in versions 6.12.0 and 7.4.0.
Potential Impact
An attacker can cause a denial of service by sending a single HTTP request with a large body to the Apache Struts REST plugin, leading to excessive memory allocation and exhaustion of the Java heap. This disrupts service availability for legitimate users. There is no indication of remote code execution or data disclosure from the provided information.
Mitigation Recommendations
Users should upgrade affected Apache Struts versions to 6.12.0 or 7.4.0, where the vulnerability is fixed. No additional configuration changes are required. Patch status is confirmed by the vendor advisory recommending these versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-10-02T10:54:35.480Z
- State
- PUBLISHED
Threat ID: 6ac3f1292cdf04f6562d91a6
Added to database: 10/05/2026, 18:49:13 UTC
Last enriched: 10/05/2026, 19:05:48 UTC
Last updated: 10/05/2026, 19:34:03 UTC
Views: 5
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