What’s Vulnerable › Vulnerabilities
CVE-2026-69229: HTML injection vulnerability in Esri Portal for ArcGIS
- Severity: medium (CVSS 5.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-21 · updated 2026-10-12
- Weakness: CWE-79
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
- Esri Portal for ArcGIS: before 11.1; 11.1, 11.1-security_2024_update1, 11.1-security_2024_update2, 11.1-security_2025_update1, 11.1-security_2025_update2, 11.1-security_2025_update3 (+14) — fixed in 11.1
How to fix
Upgrade to a fixed version: Esri Portal for ArcGIS 11.1. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2026-69229 or the next vulnerability affects your stack