CVE-2021-31805
CRITICAL9.8EPSS 93.8%Expression Language Injection in Apache Struts
Published: 4/13/2022Modified: 2/20/2024
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 tag’s 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.
Affected packages (1)
- Maven/org.apache.struts:struts2-core>= 2.0.0, < 2.5.30
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |