Apache Struts: Unbounded request body read in the REST plugin

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-104713
StatePUBLISHED
Assignerapache
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-05 19:17:14 UTC
Updated2026-10-05 20:17:09 UTC
DescriptionAllocation 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.

Risk And Classification

Problem Types: CWE-770 | CWE-770 CWE-770 Allocation of Resources Without Limits or Throttling

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Apache Software Foundation Apache Struts affected 2.1.8 2.3.37 semver Not specified
CNA Apache Software Foundation Apache Struts affected 2.5.0 2.5.33 semver Not specified
CNA Apache Software Foundation Apache Struts affected 6.0.0 6.11.0 semver Not specified
CNA Apache Software Foundation Apache Struts affected 7.0.0 7.3.0 semver Not specified

References

ReferenceSourceLinkTags
cwiki.apache.org/confluence/display/WW/S2-077 [email protected] cwiki.apache.org
www.openwall.com/lists/oss-security/2026/10/05/12 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: n0mi1k (en)

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