CVE-2026-104713 is a vulnerability in Apache Struts
Published on October 5, 2026
Apache Struts: Unbounded request body read in the REST plugin
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.
Vulnerability Analysis
CVE-2026-104713 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
Allocation of Resources Without Limits or Throttling
The software allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.
Products Associated with CVE-2026-104713
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Affected Versions
Apache Software Foundation Apache Struts:- Version 2.1.8, <= 2.3.37 is affected.
- Version 2.5.0, <= 2.5.33 is affected.
- Version 6.0.0, <= 6.11.0 is affected.
- Version 7.0.0, <= 7.3.0 is affected.