CVE-2026-73635 — Apache Struts: Unbounded growth of localized-text caches driven by the request locale

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Apache Software Foundation / Apache Struts	affected 2.0.0 through 2.3.37; affected 2.5.0 through 2.5.33; affected 6.0.0 through 6.10.0; affected 7.0.0 through 7.2.1

CWE

CWE-770

References

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.