CVE-2026-2812
Medium
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.
SeverityMedium
CVSS5.3
Exploit probability—
ProductEsri Arcgis Server
PublishedMay 20, 2026
First seenMay 20, 2026
Weakness typeCWE-287Improper authentication
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| esri arcgis_server | 11.1 ≤ v ≤ 12.0 | — |
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