{"cve":{"cve_id":"CVE-2018-11776","is_kev":true,"kev_date_added":"2021-11-03","kev_vendor_project":"Apache","kev_product":"Struts","kev_vulnerability_name":"Apache Struts Remote Code Execution Vulnerability","kev_short_description":"Apache Struts contains a vulnerability that allows for remote code execution under two circumstances. One, where the alwaysSelectFullNamespace option is true and the value isn't set for a result defined in underlying configurations and in same time, its upper package configuration have no or wildcard namespace.  Or, using URL tag which doesn't have value and action set and in same time, its upper package configuration have no or wildcard namespace.","kev_required_action":"Apply updates per vendor instructions.","kev_due_date":"2022-05-03","kev_known_ransomware":false,"kev_notes":"https://nvd.nist.gov/vuln/detail/CVE-2018-11776","kev_cwes":["CWE-20"],"epss_score":0.99993,"epss_percentile":0.99986,"epss_as_of":"2026-06-23","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.","published_at":"2018-08-22T13:00:00Z","last_modified_at":null,"cvss_v3_score":8.1,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"active","ssvc_automatable":false,"ssvc_technical_impact":"total","cwes":null,"nvd_references":["http://www.securitytracker.com/id/1041888","https://www.exploit-db.com/exploits/45367/","https://www.exploit-db.com/exploits/45262/","http://www.securityfocus.com/bid/105125","http://www.securitytracker.com/id/1041547","https://www.exploit-db.com/exploits/45260/","https://lists.apache.org/thread.html/r6d03e45b81eab03580cf7f8bb51cb3e9a1b10a2cc0c6a2d3cc92ed0c%40%3Cannounce.apache.org%3E","http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html","https://www.oracle.com/security-alerts/cpujul2020.html","https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html","https://security.netapp.com/advisory/ntap-20181018-0002/","https://cwiki.apache.org/confluence/display/WW/S2-057","https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0012","http://www.oracle.com/technetwork/security-advisory/alert-cve-2018-11776-5072787.html","https://lgtm.com/blog/apache_struts_CVE-2018-11776","https://security.netapp.com/advisory/ntap-20180822-0001/","http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2018-005.txt","https://github.com/hook-s3c/CVE-2018-11776-Python-PoC","http://packetstormsecurity.com/files/172830/Apache-Struts-Remote-Code-Execution.html"],"vuln_status":null,"trending_score":0.6099874,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:31.350578Z","updated_at":"2026-06-29T02:30:27.550645Z"},"effective_severity":"HIGH","badges":["kev","poc","epss"],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"H","value_label":"High"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"apache-software-foundation","vendor_name":"Apache Software Foundation","product_slug":"apache-struts","product_name":"Apache Struts","version_start":"2.3 to 2.3.34","version_start_inclusive":true,"version_end":"2.3 to 2.3.34","version_end_inclusive":true,"cpe23_uri":"cve5:apache-software-foundation:apache-struts:2.3 to 2.3.34:2.3 to 2.3.34"},{"vendor_slug":"apache-software-foundation","vendor_name":"Apache Software Foundation","product_slug":"apache-struts","product_name":"Apache Struts","version_start":"2.5 to 2.5.16","version_start_inclusive":true,"version_end":"2.5 to 2.5.16","version_end_inclusive":true,"cpe23_uri":"cve5:apache-software-foundation:apache-struts:2.5 to 2.5.16:2.5 to 2.5.16"}],"exploit_refs":[{"source":"nuclei","kind":"nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2018/CVE-2018-11776.yaml","title":"Apache Struts2 S2-057 - 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