GHSA-v8j6-6c2r-r27c
Expression Language Injection in Apache Struts
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Maven | org.apache.struts:struts2-core | >= 2.0.0, < 2.5.30 | 2.5.30 |
Details
As written in the advisory (Markdown source, shown as plain text).
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.
References
External links from the advisory. They lead to third-party sites.