Apache Struts 2.x before 2.3.28 allows remote attackers to execute arbitrary code via a "%{}" sequence in a tag attribute, aka forced double OGNL evaluation.
http://www.securitytracker.com/id/1035271
http://www.securityfocus.com/bid/85066
http://struts.apache.org/docs/s2-029.html
Source: Mitre, NVD
Published: 2016-04-12
Updated: 2019-08-23
Base Score: 9
Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C
Severity: High
Base Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H