CVE-2021-29102: There is a Server-Side Request Forgery (SSRF) vulnerability in Esri ArcGIS Server Manager version 10.8.1 and below.

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-07-11 · updated 2026-06-17
Weakness: CWE-918

Description

A Server-Side Request Forgery (SSRF) vulnerability in ArcGIS Server Manager version 10.8.1 and below may allow a remote, unauthenticated attacker to forge GET requests to arbitrary URLs from the system, potentially leading to network enumeration or facilitating other attacks.

Affected products

Esri ArcGIS Server: before 10.9.0 — fixed in 10.9.0

How to fix

Upgrade to a fixed version: Esri ArcGIS Server 10.9.0. Check the vendor advisory for mitigations.

References

https://www.esri.com/arcgis-blog/products/arcgis-enterprise/administration/arcgis-server-security-2021-update-1-patch/
https://www.esri.com/arcgis-blog/products/arcgis-enterprise/administration/arcgis-server-security-2021-update-1-patch/

Get alerted when CVE-2021-29102 or the next vulnerability affects your stack