What is the CVE-2026-33519 vulnerability?

CVE-2026-33519 is a security vulnerability discovered in Esri's Portal for ArcGIS. The vulnerability has been assigned a CVSS score of 9.8 (critical severity). Any organization using this product should immediately verify their exposure and take appropriate remediation steps.

Who is affected by CVE-2026-33519?

This vulnerability affects users of Esri's Portal for ArcGIS. Organizations using this solution should check whether their deployed version is vulnerable and apply available security patches or implement recommended workarounds.

How to protect against CVE-2026-33519?

Apply security patches released by Esri or implement recommended workarounds. Regular vulnerability monitoring and prompt patch deployment are essential for effective protection against this type of threat.

What is the risk level of CVE-2026-33519?

The vulnerability has a CVSS score of 9.8 (critical severity). Successful exploitation could lead to compromise of organizational systems and data.

CVE-2026-33519: Incorrect authorization of developer credentials in Esri Portal for ArcGIS 11.4–12.0

Summary

Parameter	Value
CVE ID	CVE-2026-33519
Alert Source	GitHub Advisory - Critical Vulnerability
CVE Publication Year	2026
Date Published	2026-04-21
Vendor	Esri
Product	Portal for ArcGIS
CVSS Score	9.8 (critical)
EPSS Score	No data
CISA KEV	No
Ransomware	Not confirmed

Vulnerability Description

An incorrect authorization vulnerability exists in Esri Portal for ArcGIS 11.4, 11.5 and 12.0 on Windows, Linux and Kubernetes that did not correctly check permissions assigned to developer credentials.

Required Actions

Apply vendor patches or mitigations as soon as available.

Who Is Affected?

This vulnerability affects Portal for ArcGIS by Esri. Check if your organization uses this software and requires updates.

Sources

Need help securing your systems? nFlo team offers vulnerability management and 24/7 SOC services. Contact us.

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CVE-2026-33519: Incorrect authorization of developer credentials in Esri Portal for ArcGIS 11.4–12.0

Summary

Vulnerability Description

Required Actions

Who Is Affected?

Sources

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