{"id":"CVE-2026-2812","aliases":["EUVD-2026-31147","GHSA-3wjj-6pp2-788h"],"status":"published","title":"Improper Authentication issue in ArcGIS Server","description":"ArcGIS Server contains an improper authentication vulnerability in an undocumented administrative endpoint. An unauthenticated attacker could exploit this issue by sending a crafted request to the endpoint. Successful exploitation may result in disruption of the web-based browsing interface. This issue affects ArcGIS Server 12.0 and earlier.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.0036,"percentile":0.29989,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287"],"published":"2026-05-20T17:47:40Z","modified":"2026-07-23T12:10:00Z","products":[{"vendor":"esri","product":"arcgis server"},{"vendor":"esri","product":"arcgis_server"}],"references":[{"url":"https://www.esri.com/arcgis-blog/products/trust-arcgis/administration/april2026_security_bulletin","tags":["Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-2812"},{"url":"https://github.com/advisories/GHSA-3wjj-6pp2-788h"}],"sources":{"cve":[{"id":"CVE-2026-2812","title":"Improper Authentication issue in ArcGIS Server","description":"ArcGIS Server contains an improper authentication vulnerability in an undocumented administrative endpoint. An unauthenticated attacker could exploit this issue by sending a crafted request to the endpoint. Successful exploitation may result in disruption of the web-based browsing interface. This issue affects ArcGIS Server 12.0 and earlier.","status":"published","published":"2026-05-20T17:47:40.451Z","modified":"2026-05-20T19:30:36.857Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T13:48:46.911326Z"}],"euvd":[{"id":"EUVD-2026-31147","description":"ArcGIS Server contains an improper authentication vulnerability in an undocumented administrative endpoint. An unauthenticated attacker could exploit this issue by sending a crafted request to the endpoint. Successful exploitation may result in disruption of the web-based browsing interface. This issue affects ArcGIS Server 12.0 and earlier.","status":"published","published":"2026-05-20T17:47:40Z","modified":"2026-05-20T19:30:36Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T18:21:13.845677Z"}],"ghsa":[{"id":"GHSA-3wjj-6pp2-788h","title":"ArcGIS Server contains an improper authentication vulnerability in an undocumented administrative...","description":"ArcGIS Server contains an improper authentication vulnerability in an undocumented administrative endpoint. An unauthenticated attacker could exploit this issue by sending a crafted request to the endpoint. Successful exploitation may result in disruption of the web-based browsing interface. This issue affects ArcGIS Server 12.0 and earlier.","status":"published","published":"2026-05-20T21:31:30Z","modified":"2026-05-20T21:31:30Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T15:08:14.55753Z"}],"nvd":[{"id":"CVE-2026-2812","description":"ArcGIS Server contains an improper authentication vulnerability in an undocumented administrative endpoint. An unauthenticated attacker could exploit this issue by sending a crafted request to the endpoint. Successful exploitation may result in disruption of the web-based browsing interface. This issue affects ArcGIS Server 12.0 and earlier.","status":"published","published":"2026-05-20T20:16:36.93Z","modified":"2026-07-23T12:10:00.11Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:12:19.752984Z"}]}}