CVE-2018-11776

Apache Struts versions 2.3 to 2.3.34 and 2.5 to 2.5.16 suffer from possible Remote Code Execution when alwaysSelectFullNamespace is true (either by user or a plugin like Convention Plugin) and then: results are used with no namespace and in same time, its upper package have no or wildcard namespace and similar to results, same possibility when using url tag which doesn't have value and action set and in same time, its upper package have no or wildcard namespace.

Score: CVSS 3.1 8.1 High
Status: Analyzed - security@apache.org
Published: 2018-08-22
Last modified: 2025-10-21
Known exploited (CISA KEV): since 2021-11-03, action due 2022-05-03: Apply updates per vendor instructions.

Affected products

References

http://packetstormsecurity.com/files/172830/Apache-Struts-Remote-Code-Execution.html
http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2018-005.txt
http://www.oracle.com/technetwork/security-advisory/alert-cve-2018-11776-5072787.html
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
http://www.securityfocus.com/bid/105125
http://www.securitytracker.com/id/1041547
http://www.securitytracker.com/id/1041888
https://cwiki.apache.org/confluence/display/WW/S2-057
https://github.com/hook-s3c/CVE-2018-11776-Python-PoC
https://lgtm.com/blog/apache_struts_CVE-2018-11776
https://lists.apache.org/thread.html/r6d03e45b81eab03580cf7f8bb51cb3e9a1b10a2cc0c6a2d3cc92ed0c%40%3Cannounce.apache.org…
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0012
https://security.netapp.com/advisory/ntap-20180822-0001/
https://security.netapp.com/advisory/ntap-20181018-0002/
https://www.exploit-db.com/exploits/45260/
https://www.exploit-db.com/exploits/45262/
https://www.exploit-db.com/exploits/45367/
https://www.oracle.com/security-alerts/cpujul2020.html
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-11776