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Test your applicationsUpgrade org.apache.struts:struts2-core to version 6.8.0, 7.1.1 or higher.
org.apache.struts:struts2-core is a popular open-source framework for developing web applications in the Java programming language.
Affected versions of this package are vulnerable to Incomplete Cleanup in the multipart request processing in the file parameters in OGNL-mapped Value Object. An attacker can cause disk exhaustion by repeatedly sending crafted requests that trigger file leaks.