CVE-2026-33520
BUG-000185167 - ArcGIS Server has a security vulnerability.
CVSS Score
6.1
EPSS Score
0.0%
EPSS Percentile
0th
There is a reflected cross site scripting vulnerability in Esri Portal for ArcGIS versions 12.1 and prior which may allow a remote, unauthenticated attacker to create a crafted link which when clicked could potentially execute arbitrary JavaScript code in the victim’s browser. A patch is provided for impacted ArcGIS Server software in General Availability and Extended support status, which includes versions 11.5. Other versions are in mature or retired status, which are not patch eligible. Users working with unlisted versions are advised to upgrade and apply the patch.
| CWE | CWE-79 |
| Vendor | esri |
| Product | arcgis server |
| Published | Oct 26, 2026 |
| Last Updated | Oct 26, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
Esri / ArcGIS Server
11.1 < 12.1