CVE-2026-33518 Incorrect privilege assignment in Portal for ArcGIS

Critical 9.8 Published 21 Apr 2026 Updated 23 Apr 2026

Highly privileged users can create developer credentials with excessive privileges in Esri Portal for ArcGIS, leading to privilege escalation.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-33518?

CVE-2026-33518 is a critical vulnerability in Esri Portal for Arcgis, published on 21 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An incorrect privilege assignment vulnerability exists in Esri Portal for ArcGIS 11.5 in Windows and Linux that allows highly privileged users to create developer credentials that may grant more privileges than expected.

Weakness: CWE-266

Which versions are affected by CVE-2026-33518?

It affects 1 product.

Products include Esri Portal for Arcgis.

How do I fix CVE-2026-33518?

No fix has been published for CVE-2026-33518 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-33518 being exploited?

There is no known exploitation of CVE-2026-33518 in the wild and no public exploit code.

All Esri Portal for Arcgis vulnerabilities

Sources

Also known as GHSA-5qjr-2xxv-p9m9.