CVE-2021-29116 BUG-000142180 Hosted feature services vulnerable to stored XSS

Medium 6.1 Published 7 Dec 2021 Updated 10 Apr 2025

Remote attackers can inject malicious JavaScript into hosted feature services, leading to arbitrary code execution in users' browsers.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2021-29116?

CVE-2021-29116 is a medium-severity cross-site scripting vulnerability in Esri Arcgis Server, published on 7 Dec 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

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.

Weakness: CWE-79

Which versions are affected by CVE-2021-29116?

It affects 1 product.

Products include Esri Arcgis Server.

How do I fix CVE-2021-29116?

No fix has been published for CVE-2021-29116 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2021-29116 being exploited?

There is no known exploitation of CVE-2021-29116 in the wild and no public exploit code.

All Esri Arcgis Server vulnerabilities

Sources

Also known as GHSA-g47m-f7f9-9p9x.