CVE-2026-73635

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

Published: Aug 15, 2026Updated: Aug 18, 2026 Sources: CVE List NVDCWE-770

7.5HIGH

Description

Allocation 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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

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Weaknesses

CWE-770

Affected Products

apache

oss-project·USaka apache httpd, apache http server

strutsLibraryLibrary

OSS Libraries / web-framework

Apache Software Foundation

oss-project·USaka apache foundation

Apache StrutsLibraryLibrary

OSS Libraries / web-framework

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Impact

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References

https://cwiki.apache.org/confluence/display/WW/S2-074

cwiki.apache.org

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