CVE-2026-2812

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.

Score

CVSS 3.1 5.3 Medium

Status

Analyzed - psirt@esri.com

Published

2026-05-20

Last modified

2026-05-20

Weaknesses

CWE-287

Affected products

• Arcgis Server (Esri)

References

• https://www.esri.com/arcgis-blog/products/trust-arcgis/administration/april2026_security_bulletin