cve/2021/CVE-2021-31805.md
2025-09-29 21:09:30 +02:00

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CVE-2021-31805

Description

The fix issued for CVE-2020-17530 was incomplete. So from Apache Struts 2.0.0 to 2.5.29, still some of the tags attributes could perform a double evaluation if a developer applied forced OGNL evaluation by using the %{...} syntax. Using forced OGNL evaluation on untrusted user input can lead to a Remote Code Execution and security degradation.

POC

Reference

Github