Apache Struts: Unbounded growth of localized-text caches driven by the request locale

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-73635
StatePUBLISHED
Assignerapache
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 11:16:27 UTC
Updated2026-08-15 11:16:27 UTC
DescriptionAllocation of resources without limits or throttling vulnerability in Apache Struts. When no fixed locale is configured, the locale used for localized-text lookups is taken from the incoming request, allowing an unauthenticated remote client to cause the framework's internal localized-text caches to grow without bound and exhaust the Java heap, denying service to other users. Applications that configure a fixed locale are not affected. This issue affects Apache Struts: from 2.0.0 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.

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 2.0.0 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 6.10.0 semver Not specified
CNA Apache Software Foundation Apache Struts affected 7.0.0 7.2.1 semver Not specified

References

ReferenceSourceLinkTags
cwiki.apache.org/confluence/display/WW/S2-074 [email protected] cwiki.apache.org
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: Kuniyoshi Noguchi (野口 晋義), (@KuniNogu) (en)

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