CVE-2021-29116: Esri Arcgis Server

Medium severity, CVSS 6.1. EPSS: 0.8% chance of exploitation in the next 30 days.

A stored Cross Site Scripting (XSS) vulnerability in Esri ArcGIS Server feature services versions 10.8.1 and 10.9 (only) feature services may allow a remote, unauthenticated attacker to pass and store malicious strings via crafted queries which when accessed could potentially execute arbitrary JavaScript code in the user’s browser.

Affected products

• Esri Arcgis Server: version 10.8.1 only; version 10.9.0 only

Published 2021-12-07. Last modified 2026-06-17.