CVE-2025-66675: Apache Struts: File leak in multipart request processing causes disk exhaustion (DoS) - version ranges fixed

Severity: high (CVSS 8.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-12-10 · updated 2026-10-14
Weakness: CWE-459

Description

Denial of Service vulnerability in Apache Struts, file leak in multipart request processing causes disk exhaustion. This issue affects Apache Struts: from 2.0.0 through 6.7.4, from 7.0.0 through 7.0.3. Users are recommended to upgrade to version 6.8.0 or 7.1.1, which fixes the issue. It's related to https://cve.org/CVERecord?id=CVE-2025-64775 - this CVE addresses missing affected version 6.7.4

Affected products

Apache Struts: from 2.0.0 through 2.3.37; from 2.5.0 through 2.5.33; from 6.0.0 before 6.8.0; from 7.0.0 before 7.1.1 — fixed in 6.8.0, 7.1.1

How to fix

Upgrade to a fixed version: Apache Struts 6.8.0, 7.1.1. Check the vendor advisory for mitigations.

References

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