{"id":"CVE-2026-2812","title":"ArcGIS Server contains an improper authentication vulnerability in an undocumented administrative endpoint","summary":"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 re…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","cwe":["CWE-287"],"vendor":"esri","product":"arcgis_server","affected":["arcgis_server >= 11.1, <= 12.0"],"published":"2026-05-20","updated":"2026-07-23","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-2812","references":[{"url":"https://www.esri.com/arcgis-blog/products/trust-arcgis/administration/april2026_security_bulletin","label":"psirt@esri.com"}],"tags":["nvd"],"epss":0.0036,"epssPercentile":0.2968,"ingestedAt":"2026-07-23T13:18:08.450Z","slug":"CVE-2026-2812","body":"## Overview\n\nArcGIS 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.\n\n## Affected\n\n- `arcgis_server >= 11.1, <= 12.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}