Vulnerability · Published Aug 21, 2026 · Assigned by Esri
CVE-2026-69229HTML injection vulnerability in Esri Portal for ArcGIS
Medium 5.4
In plain English
A medium-severity cross-site scripting in Portal for ArcGIS from Esri. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).
Official description
There is an HTML injection vulnerability in Esri Portal for ArcGIS versions 12.0 and prior that allows a remote, authenticated attacker to insert arbitrary HTML into the Portal for ArcGIS Home application. Users working with ArcGIS Enterprise 11.1, 11.3, 11.5 and 12.0 are encouraged to patch. All users are advised to upgrade to the latest long-term support release.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Esri | Portal for ArcGIS | 11.1 – through 12.0 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N