CVE-2026-50095— BUG-000187165 - ArcGIS Server has a security vulnerability.

Quick assessment

Affected

Esri ArcGIS Server

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Esri ArcGIS Server 11.1 及更早版本在 Windows 和 Linux 平台上存在存储型跨站脚本（Stored XSS）漏洞。在某些配置下，该漏洞允许远程未认证攻击者上传包含恶意代码的文件，这些代码可能在受害者的浏览器环境中执行。针对处于“正式发布（General Availability）”和“扩展支持（Extended support）”状态的 ArcGIS Server 软件（包括 12.1、12.0、11.5、11.3 和 11.1 版本），Esri 已提供安全补丁。其他版本因处于“成

CVSS 6.1 · Medium Updated Oct 27, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

BUG-000187165 - ArcGIS Server has a security vulnerability.

Source: CVE Program / CVE List V5

Vulnerability Description

There is a stored cross site scripting issue in Esri ArcGIS Server 11.1 and earlier on Windows and Linux that in some configurations allows a remote unauthenticated attacker to store files that contain malicious code that may execute in the context of a victim’s browser. A patch is provided for ArcGIS Server software in General Availability and Extended support status, which includes versions 12.1, 12.0, 11.5, 11.3, and 11.1. Other versions are in mature or retired status, which are not patch eligible. Users working with unlisted versions are advised to upgrade and apply the patch.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Source: CVE Program / CVE List V5

Vulnerability Type

在Web页面生成时对输入的转义处理不恰当(跨站脚本)

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Esri	ArcGIS Server	11.1 ~ 12.1	-

II. Public POCs for CVE-2026-50095

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2026-50095

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Other References for CVE-2026-50095 (1)

https://www.esri.com/arcgis-blog/products/trust-arcgis/administration/october-2026-arcgis-security-bulletin

https://www.cve.org/CVERecord?id=CVE-2026-50095

Same Patch Batch · Esri · 2026-10-26 · 6 CVEs total

CVE-2026-10757	9.8 CRITICAL	BUG-000187511 - ArcGIS Server has a security vulnerability.
CVE-2026-33521	7.5 HIGH	BUG-000186514 - ArcGIS Server has a security vulnerability.
CVE-2026-33520	6.1 MEDIUM	BUG-000185167 - ArcGIS Server has a security vulnerability.
CVE-2026-50096	6.1 MEDIUM	BUG-000187164 - ArcGIS Server has a security vulnerability.
CVE-2026-33522	5.3 MEDIUM	BUG-000182936 - ArcGIS Server has a security vulnerability.

IV. Related Vulnerabilities

Same product: ArcGIS Server

Same vendor: Esri

Same weakness: CWE-79