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CVE-2026-69234— reflected cross site scripting vulnerability in Esri Portal for ArcGIS

Quick assessment

Affected
Esri Portal for ArcGIS
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.

在 Esri Portal for ArcGIS 11.5 及更早版本中，存在一个反射型跨站脚本（XSS）漏洞。该漏洞可能允许远程、未经身份验证的攻击者构造一个恶意链接，受害者点击后，其浏览器中可能会执行任意 JavaScript 代码。 建议正在使用 ArcGIS Enterprise 11.1、11.3 和 11.5 的用户及时打补丁。所有用户都被建议升级到最新的长期支持（LTS）版本。 此外，由于在分配此 CVE 编号时，ArcGIS Web App Builder 开发者版本已不再受支持，建议正在使用 Ar

CVSS 6.1 · Medium EPSS 0.24% · P15

Possible ATT&CK Techniques 1 AI

T1059.007 · JavaScript

Affected Version Matrix 1

VendorProduct Version RangeStatus
Esri Portal for ArcGIS 11.1≤ 11.5 affected
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I. Basic Information for CVE-2026-69234

Vulnerability Information
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Vulnerability Title
reflected cross site scripting vulnerability in Esri Portal for ArcGIS
Source: CVE Program / CVE List V5
Vulnerability 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.
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 Portal for ArcGIS 11.1 ~ 11.5 -

II. Public POCs for CVE-2026-69234

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III. Intelligence Information for CVE-2026-69234

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Vendor Advisories for CVE-2026-69234 (1)

Same Patch Batch · Esri · 2026-08-21 · 13 CVEs total

CVE-2026-69236 6.1 MEDIUM stored cross site scripting issue in Esri Portal for ArcGIS
CVE-2026-69235 6.1 MEDIUM stored cross site scripting issue in Esri Portal for ArcGIS
CVE-2026-69224 5.9 MEDIUM information disclosure vulnerability in Esri Portal for ArcGIS
CVE-2026-69225 5.9 MEDIUM information disclosure vulnerability in Esri Portal for ArcGIS
CVE-2026-69230 5.5 MEDIUM stored cross site scripting issue in Esri Portal for ArcGIS
CVE-2026-69231 5.5 MEDIUM stored cross site scripting issue in Esri Portal for ArcGIS
CVE-2026-69232 5.5 MEDIUM stored cross site scripting issue in Esri Portal for ArcGIS
CVE-2026-69233 5.5 MEDIUM stored cross site scripting issue in Esri Portal for ArcGIS
CVE-2026-69229 5.4 MEDIUM HTML injection vulnerability in Esri Portal for ArcGIS
CVE-2026-69228 5.3 MEDIUM missing authentication vulnerability in Esri Portal for ArcGIS
CVE-2026-69237 3.8 LOW HTML injection vulnerability in Esri Portal for ArcGIS
CVE-2026-69238 3.5 LOW HTML injection vulnerability in Esri Portal for ArcGIS

IV. Related Vulnerabilities

Same product: Portal for ArcGIS
Same vendor: Esri
Same weakness: CWE-79

V. Comments for CVE-2026-69234

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