Apache Struts 2.0.0 to 2.5.20 forced double OGNL evaluation, when evaluated on raw user input in tag attributes, may lead to remote code execution.
https://cwiki.apache.org/confluence/display/ww/s2-059
http://packetstormsecurity.com/files/160108/Apache-Struts-2.5.20-Double-OGNL-Evaluation.html
https://launchpad.support.sap.com/#/notes/2982840
http://packetstormsecurity.com/files/160721/Apache-Struts-2-Forced-Multi-OGNL-Evaluation.html
https://www.oracle.com/security-alerts/cpujan2021.html
https://lists.apache.org/thread.html/[email protected]%3Cannounce.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Cannounce.apache.org%3E
Source: MITRE
Published: 2020-09-14
Updated: 2022-04-18
Type: CWE-915
Base Score: 7.5
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 10
Severity: HIGH
Base Score: 9.8
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 3.9
Severity: CRITICAL