Apache Struts Deserialization of Untrusted Data Vulnerability

Apache Struts REST Plugin uses an XStreamHandler with an instance of XStream for deserialization without any type filtering, which can lead to remote code execution when deserializing XML payloads.

Published 15 Sep 2017Updated 16 Jun 202623 sources
CVSS 8.1 ✓ VERIFIED REFERENCE△ CISA KEV

What happened

Apache Struts REST Plugin uses an XStreamHandler with an instance of XStream for deserialization without any type filtering, which can lead to remote code execution when deserializing XML payloads.

Affected versions

Struts: Apache Struts before 2.3.34 and 2.5.x before 2.5.13 Fixed: See vendor advisory.

Why it matters

This source correlation may provide earlier visibility while structured CVE metadata is still being updated.

Detection & mitigation

  • Review the original advisory and validate affected versions.
  • Apply vendor-provided updates or mitigations when available.

Public PoC references