CVE-2026-69234 reflected cross site scripting vulnerability in Esri Portal for ArcGIS
Remote attackers can execute arbitrary JavaScript in victims' browsers via crafted links in Esri Portal for ArcGIS.
- 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-2026-69234?
CVE-2026-69234 is a medium-severity cross-site scripting vulnerability in Esri Portal for Arcgis, published on 21 Aug 2026. 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
There is a reflected cross site scripting vulnerability in Esri Portal for ArcGIS versions 11.5 and prior which may allow a remote, unauthenticated attacker to create a crafted link which when clicked could potentially execute arbitrary JavaScript code in the victim’s browser. Users working with ArcGIS Enterprise 11.1, 11.3, and 11.5 are encouraged to patch. All users are advised to upgrade to the latest long-term support release. Users working with ArcGIS Web App Builder developer edition are advised to migrate to ArcGIS Experience Builder, as ArcGIS Web App Builder developer edition is unsupported when this CVE is assigned.
Weakness: CWE-79
Which versions are affected by CVE-2026-69234?
It affects 1 product.
Products include Esri Portal for Arcgis.
How do I fix CVE-2026-69234?
No fix has been published for CVE-2026-69234 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-2026-69234 being exploited?
There is no known exploitation of CVE-2026-69234 in the wild and no public exploit code.
Other vulnerabilities in Esri Portal for Arcgis
Sources
Also known as GHSA-fvj8-q86x-cgm8.