There is a stored cross site scripting issue in Esri Portal for ArcGIS versions 11.5 and prior that may allow a remote, administratively privileged attacker to inject malicious code that could potentially execute arbitrary in a victim’s browser. Users working with ArcGIS Enterprise 11.1, 11.3, and 11.5 are encouraged to patch. All users are advised to upgrade to the latest long-term support release.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction . The vulnerability impacts limited data confidentiality, limited integrity, for affected systems. Impacting 1 product from esri organizations running these solutions should prioritize assessment and patching.
Reported in 2026, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2026-08-21T21:17:03.670
2026-09-11T17:48:52.230
Analyzed
CVSSv3.1: 5.5 (MEDIUM)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | esri | portal_for_arcgis | < 11.1 | Yes |
| Application | esri | portal_for_arcgis | 11.1 | Yes |
| Application | esri | portal_for_arcgis | 11.1 | Yes |
| Application | esri | portal_for_arcgis | 11.1 | Yes |
| Application | esri | portal_for_arcgis | 11.1 | Yes |
| Application | esri | portal_for_arcgis | 11.1 | Yes |
| Application | esri | portal_for_arcgis | 11.1 | Yes |
| Application | esri | portal_for_arcgis | 11.1 | Yes |
| Application | esri | portal_for_arcgis | 11.2 | Yes |
| Application | esri | portal_for_arcgis | 11.3 | Yes |
| Application | esri | portal_for_arcgis | 11.3 | Yes |
| Application | esri | portal_for_arcgis | 11.3 | Yes |
| Application | esri | portal_for_arcgis | 11.3 | Yes |
| Application | esri | portal_for_arcgis | 11.3 | Yes |
| Application | esri | portal_for_arcgis | 11.4 | Yes |
| Application | esri | portal_for_arcgis | 11.5 | Yes |
| Application | esri | portal_for_arcgis | 11.5 | Yes |
| Application | esri | portal_for_arcgis | 11.5 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For esri's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.