CVE-2021-29105 Cross-site scripting in ArcGIS Server

Medium 5.4 Published 11 Jul 2021 Updated 10 Apr 2025

Remote authenticated attackers can inject malicious scripts into the ArcGIS Server Services Directory, potentially executing code or hijacking user sessions.

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

What is CVE-2021-29105?

CVE-2021-29105 is a medium-severity cross-site scripting vulnerability in Esri Arcgis Server, published on 11 Jul 2021. Any signed-in user can exploit it over the network, 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 Services Directory version 10.8.1 and below may allow a remote authenticated attacker to pass and store malicious strings in the ArcGIS Services Directory.

Weakness: CWE-79

Which versions are affected by CVE-2021-29105?

It affects 1 product.

Products include Esri Arcgis Server.

How do I fix CVE-2021-29105?

No fix has been published for CVE-2021-29105 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-2021-29105 being exploited?

There is no known exploitation of CVE-2021-29105 in the wild and no public exploit code.

All Esri Arcgis Server vulnerabilities

Sources

Also known as GHSA-5p56-v5jg-hm5x.