# CVE-2018-11776: Apache Struts Remote Code Execution Vulnerability

> CVE-2018-11776: Apache Struts Remote Code Execution Vulnerability. CVSS 8.1 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2018-11776
Last updated: 2025-10-21T23:45:48Z

- Published: 2018-08-22 13:00 UTC · Updated: 2025-10-21 23:45 UTC · Assigner: apache
- CVSS: 8.1 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS: 100.0%, 100th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2021-11-03, federal due date 2022-05-03, ransomware use: Unknown

## Description

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.

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- Apache Software Foundation: Apache Struts

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2018-11776)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2018-11776)
- [http://packetstormsecurity.com/files/172830/Apache-Struts-Remote-Code-Execution.html](http://packetstormsecurity.com/files/172830/Apache-Struts-Remote-Code-Execution.html)
- [https://cwiki.apache.org/confluence/display/WW/S2-057](https://cwiki.apache.org/confluence/display/WW/S2-057)
- [https://github.com/hook-s3c/CVE-2018-11776-Python-PoC](https://github.com/hook-s3c/CVE-2018-11776-Python-PoC)
- [https://lgtm.com/blog/apache\_struts\_CVE-2018-11776](https://lgtm.com/blog/apache_struts_CVE-2018-11776)
- [https://lists.apache.org/thread.html/r6d03e45b81eab03580cf7f8bb51cb3e9a1b10a2cc0c6a2d3cc92ed0c%40%3Cannounce.apache.org%3E](https://lists.apache.org/thread.html/r6d03e45b81eab03580cf7f8bb51cb3e9a1b10a2cc0c6a2d3cc92ed0c%2540%3Cannounce.apache.org%3E)
- [https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0012](https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0012)
- [https://security.netapp.com/advisory/ntap-20180822-0001/](https://security.netapp.com/advisory/ntap-20180822-0001/)
- [https://security.netapp.com/advisory/ntap-20181018-0002/](https://security.netapp.com/advisory/ntap-20181018-0002/)
- [https://www.exploit-db.com/exploits/45260/](https://www.exploit-db.com/exploits/45260/)
- [https://www.exploit-db.com/exploits/45262/](https://www.exploit-db.com/exploits/45262/)
- [https://www.exploit-db.com/exploits/45367/](https://www.exploit-db.com/exploits/45367/)
- [https://www.oracle.com/security-alerts/cpujul2020.html](https://www.oracle.com/security-alerts/cpujul2020.html)
- [https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html](https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html)
- [http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2018-005.txt](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/alert-cve-2018-11776-5072787.html)
- [http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html](http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html)
- [http://www.securityfocus.com/bid/105125](http://www.securityfocus.com/bid/105125)
- [http://www.securitytracker.com/id/1041547](http://www.securitytracker.com/id/1041547)
- [http://www.securitytracker.com/id/1041888](http://www.securitytracker.com/id/1041888)

---

_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


---
Canonical: https://rewindex.com/cve/CVE-2018-11776 · Markdown: https://rewindex.com/cve/CVE-2018-11776.md · JSON: https://rewindex.com/api/v1/cves/CVE-2018-11776 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:46:48.107Z