{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-33519/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":9.8,"id":"CVE-2026-33519"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["critical"],"_cs_tags":["esri","arcgis","privilege-escalation","incorrect-authorization","cve-2026-33519","webserver"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eCVE-2026-33519 is a critical incorrect authorization vulnerability affecting Esri Portal for ArcGIS versions 11.4, 11.5, and 12.0. This flaw exists across Windows, Linux, and Kubernetes deployments and stems from the application\u0026rsquo;s failure to properly validate permissions assigned to developer credentials. This oversight allows attackers with malicious intent to potentially bypass intended authorization controls and escalate privileges within the ArcGIS portal. Given the widespread use of ArcGIS in critical infrastructure and mapping applications, this vulnerability poses a significant risk to organizations relying on these systems. Successful exploitation could lead to unauthorized access to sensitive data, modification of system configurations, or disruption of critical services.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker gains initial access to the Esri Portal for ArcGIS application, potentially through compromised developer credentials or exploiting other vulnerabilities.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages developer APIs or interfaces within ArcGIS Portal.\u003c/li\u003e\n\u003cli\u003eThe attacker attempts to perform actions that require elevated privileges but lack proper authorization checks due to the vulnerability (CVE-2026-33519).\u003c/li\u003e\n\u003cli\u003eThe system incorrectly grants the attacker access to restricted functions or data due to the insufficient permission validation.\u003c/li\u003e\n\u003cli\u003eThe attacker escalates privileges by exploiting the unauthorized access to modify user roles or system configurations.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages elevated privileges to access sensitive data stored within the ArcGIS Portal, such as maps, geospatial data, or user information.\u003c/li\u003e\n\u003cli\u003eThe attacker may further compromise the system by installing malicious extensions or modifying core system files.\u003c/li\u003e\n\u003cli\u003eThe attacker achieves complete control over the ArcGIS Portal, potentially leading to data breaches, service disruption, or further lateral movement within the network.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-33519 can lead to significant damage, including unauthorized access to sensitive geospatial data, modification of critical system configurations, and potential disruption of services reliant on ArcGIS Portal. Given the wide use of ArcGIS in government, utilities, and transportation sectors, a successful attack could impact essential services. The lack of proper authorization checks on developer credentials can expose organizations to data breaches, financial losses, and reputational damage. This vulnerability affects all deployments of Esri Portal for ArcGIS 11.4, 11.5, and 12.0 on Windows, Linux, and Kubernetes, potentially impacting a large number of organizations globally.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply the security patch released by Esri to address CVE-2026-33519 immediately after thorough testing in a non-production environment.\u003c/li\u003e\n\u003cli\u003eReview and enforce strict permission controls for all developer credentials used within Esri Portal for ArcGIS to minimize the attack surface.\u003c/li\u003e\n\u003cli\u003eImplement the Sigma rule \u003ccode\u003eDetect Suspicious ArcGIS Developer API Usage\u003c/code\u003e to identify potential exploitation attempts targeting CVE-2026-33519.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for unusual activity related to developer API endpoints in ArcGIS Portal, looking for unauthorized access attempts.\u003c/li\u003e\n\u003cli\u003eEnable detailed logging for ArcGIS Portal\u0026rsquo;s authorization and authentication mechanisms to improve visibility into potential privilege escalation attempts.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-21T21:16:29Z","date_published":"2026-04-21T21:16:29Z","id":"/briefs/2026-04-esri-privesc/","summary":"CVE-2026-33519 is a critical vulnerability in Esri Portal for ArcGIS 11.4, 11.5, and 12.0, where incorrect authorization checks on developer credentials can lead to unauthorized privilege escalation on Windows, Linux, and Kubernetes deployments.","title":"Esri Portal for ArcGIS Incorrect Authorization Vulnerability (CVE-2026-33519)","url":"https://feed.craftedsignal.io/briefs/2026-04-esri-privesc/"}],"language":"en","title":"CraftedSignal Threat Feed — Cve-2026-33519","version":"https://jsonfeed.org/version/1.1"}