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CVE-2026-66771— Cross Site Scripting (XSS) vulnerability in SAPUI5

Quick assessment

Affected
SAP_SE SAPUI5
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.

SAPUI5是德国SAP公司的一系列用于构建具有一致用户体验并符合 SAP Fiori 设计指南的应用程序的库。 SAPUI5存在跨站脚本漏洞，该漏洞源于允许具有内容适配权限的关键用户向持久化应用程序更改中注入恶意脚本内容，可能导致其他用户打开适配应用时脚本在受害者浏览器会话中执行，从而访问敏感会话数据并代表受害者执行未授权操作。

CVSS 6.1 · Medium EPSS 0.38% · P30

Affected Version Matrix 8

VendorProduct Version RangeStatus
SAP_SE SAPUI5 SAP_UI 750 affected
754 affected
755 affected
756 affected
757 affected
758 affected
816 affected
UI_700 200 affected
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I. Basic Information for CVE-2026-66771

Vulnerability Information
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Vulnerability Title
Cross Site Scripting (XSS) vulnerability in SAPUI5
Source: CVE Program / CVE List V5
Vulnerability Description
SAPUI5 allows a key user with content adaptation privileges to inject malicious script content into persisted application changes. When another user subsequently opens the adapted application, the injected script executes in the victim's browser session. Successful exploitation could allow the attacker to access sensitive session data and perform unauthorized actions on behalf of the victim, resulting in a high impact on confidentiality and integrity. There is no impact on availability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/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
Vulnerability Title
SAPUI5 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SAPUI5是德国SAP公司的一系列用于构建具有一致用户体验并符合 SAP Fiori 设计指南的应用程序的库。 SAPUI5存在跨站脚本漏洞，该漏洞源于允许具有内容适配权限的关键用户向持久化应用程序更改中注入恶意脚本内容，可能导致其他用户打开适配应用时脚本在受害者浏览器会话中执行，从而访问敏感会话数据并代表受害者执行未授权操作。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
SAP_SE SAPUI5 SAP_UI 750 -

II. Public POCs for CVE-2026-66771

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III. Intelligence Information for CVE-2026-66771

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Vendor Pages for CVE-2026-66771 (1)

Same Patch Batch · SAP_SE · 2026-08-11 · 34 CVEs total

CVE-2026-58231 10.0 CRITICAL Improper Authorization in SAP Commerce Cloud (Data Hub Adapter)
CVE-2026-34265 9.8 CRITICAL Memory Corruption vulnerability in Application Server ABAP for SAP NetWeaver and ABAP Plat
CVE-2026-44758 9.1 CRITICAL Code Injection vulnerability in Manufacturing Integration and Intelligence
CVE-2026-58243 8.8 HIGH Privilege Escalation vulnerability in SAP ABAP Developer Tools
CVE-2026-66763 7.9 HIGH Credentials disclosure in SAP BusinessObjects Business Intelligence Platform (Central Mana
CVE-2026-44763 7.6 HIGH Directory Traversal vulnerability in SAP Manufacturing Integration and Intelligence
CVE-2026-44764 7.3 HIGH Missing Authorization Check in SAP Manufacturing Integration and Intelligence
CVE-2026-44765 7.3 HIGH Missing Authorization Check in SAP Manufacturing Integration and Intelligence
CVE-2026-58230 7.0 HIGH Multiple vulnerabilities in SAP Business AI Platform (Approuter)
CVE-2026-58248 6.5 MEDIUM XML External Entity Injection in SAP BusinessObjects Business Intelligence
CVE-2026-66760 6.4 MEDIUM Multiple vulnerabilities in SAP Business AI Platform (Approuter)
CVE-2026-66770 6.3 MEDIUM SQL Injection vulnerability in SAP Social Intelligence
CVE-2026-66779 6.3 MEDIUM Cross-Site Scripting (XSS) vulnerability in SAP NetWeaver Application Server ABAP
CVE-2026-58235 6.3 MEDIUM Use of Vulnerable Third-Party Component in SAP NetWeaver AS Java (Adobe Document Services)
CVE-2026-58238 5.9 MEDIUM Multiple vulnerabilities in SAP Business AI Platform (Approuter)
CVE-2026-58237 5.9 MEDIUM Multiple vulnerabilities in SAP Business AI Platform (Approuter)
CVE-2026-66777 5.9 MEDIUM Multiple vulnerabilities in SAP Business AI Platform (Approuter)
CVE-2026-66776 5.9 MEDIUM Multiple vulnerabilities in SAP Business AI Platform (Approuter)
CVE-2026-66773 5.9 MEDIUM Server-controlled `__next` URL is not checking cross-origin
CVE-2026-58236 5.5 MEDIUM OS Command Injection vulnerability in Application Server ABAP of SAP NetWeaver and ABAP Pl

Showing top 20 of 34 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: SAPUI5
Same vendor: SAP_SE
Same weakness: CWE-79

V. Comments for CVE-2026-66771

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