Apache Struts multipart request processing file leak DoS
CVE-2025-64775 is a denial-of-service vulnerability in Apache Struts caused by a file leak during multipart request processing. When Struts handles multipart/form-data requests for file uploads, temporary files created as part of request parsing are not properly cleaned up under the vulnerable code path, allowing them to accumulate on disk. Repeated exploitation can exhaust available storage and destabilize or crash the application server. The issue is documented by the Apache Struts project as S2-068 and was reported by Nicolas Fournier. Affected versions are Apache Struts 2.0.0 through 6.7.0 and 7.0.0 through 7.0.3.
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Impact
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Mitigation
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Exploits
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Recent activity
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A critical denial-of-service vulnerability in Apache Struts 2's file upload functionality allows attackers to exhaust disk space via a file leak in multipart request processing, leading to server crashes and service disruption.
A vulnerability in Apache Struts. Details not specified in the content.
A vulnerability in Apache Struts, referred to as the 'File Leak' vulnerability, which can lead to disk exhaustion.
A denial-of-service vulnerability in Apache Struts 2 core (org.apache.struts:struts2-core) dependency affecting Atlassian Crowd Data Center/Server.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.