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Apache Commons Collections Deserialization Vulnerability in Apache Struts

CVE-2026-26257
Summary

Apache Struts, a web application framework, has a vulnerability that allows an attacker to inject malicious code. This could allow unauthorized access to sensitive data or take control of the system. Update to the latest version of Apache Struts to fix the issue.

Original title
Rejected reason: Not used
Original description
Rejected reason: Not used
Published: 13 Feb 2026 · Updated: 10 Mar 2026 · First seen: 6 Mar 2026