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CVE-2026-89105— Improper Authentication in HybridTokenAuthenticator of SAP/cloud-security-services-integration-library

Quick assessment

Affected
SAP_SE SAP/cloud-security-services-integration-library
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.

SAP/cloud-security-services-integration-library 中的 HybridTokenAuthenticator 组件会接受来自非预期的环境 IAS/XSUAA 绑定的令牌，可能导致未经授权的访问。此漏洞使攻击者能够使用本不应被接受的令牌获取系统的未授权访问权限，从而导致安全漏洞。

CVSS 4.2 · Medium EPSS 0.14% · P3

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
SAP_SE SAP/cloud-security-services-integration-library >=3.6.6 affected
<4.1.1 affected
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I. Basic Information for CVE-2026-89105

Vulnerability Information
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Vulnerability Title
Improper Authentication in HybridTokenAuthenticator of SAP/cloud-security-services-integration-library
Source: CVE Program / CVE List V5
Vulnerability Description
The HybridTokenAuthenticator component of the SAP/cloud-security-services-integration-library accepts tokens from unintended ambient IAS/XSUAA bindings, potentially allowing unauthorized access. This vulnerability allows an attacker to gain unauthorized access to the system by using tokens that should not be accepted, leading to a breach of security.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不安全的默认资源初始化
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
SAP_SE SAP/cloud-security-services-integration-library >=3.6.6 -

II. Public POCs for CVE-2026-89105

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III. Intelligence Information for CVE-2026-89105

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Other References for CVE-2026-89105 (1)

Same Patch Batch · SAP_SE · 2026-10-13 · 20 CVEs total

CVE-2026-89111 10.0 CRITICAL OAuth2 SSRF vulnerability in SAP Cloud SDK for Python
CVE-2026-89107 9.9 CRITICAL Code Injection vulnerability in SAP S/4HANA (Manage Substitution/Validation Rules)
CVE-2026-89110 9.9 CRITICAL Broken Access Control in SAP NetWeaver Visual Composer
CVE-2026-89108 9.1 CRITICAL Missing Authorization check in SAP Manufacturing Integration and Intelligence (Configurati
CVE-2026-89113 8.8 HIGH SQL Injection vulnerability in SAP Commerce Cloud (OOTB Code)
CVE-2026-58249 7.5 HIGH Memory Corruption vulnerability in SAP NetWeaver and SAP Web Dispatcher (Internet Communic
CVE-2026-89120 7.1 HIGH Missing authorization check in SAP ABAP Platform
CVE-2026-89112 6.5 MEDIUM Broken Access Control in CLA-Assistant � CLA Signature PII Disclosure
CVE-2026-76972 6.5 MEDIUM Cross-Site Scripting (XSS) vulnerability in SAP Manufacturing Integration and Intelligence
CVE-2026-89122 6.1 MEDIUM Open Redirect Vulnerability in SAP NetWeaver Enterprise Portal
CVE-2026-89117 6.1 MEDIUM Cross-Site Scripting (XSS) vulnerability in SAP NetWeaver Enterprise Portal
CVE-2026-76975 6.1 MEDIUM Cross-Site Scripting (XSS) vulnerability in SAPUI5 (Support Assistant Overlay)
CVE-2026-89116 5.9 MEDIUM OS Command Injection in Yeoman-UI / Application Wizard Extension for VS Code
CVE-2026-76976 5.4 MEDIUM Cross-Site Scripting (XSS) vulnerability in SAP NetWeaver Application Server ABAP (Applica
CVE-2026-89118 5.3 MEDIUM Information Disclosure vulnerability in SAP NetWeaver Enterprise Portal
CVE-2026-89121 4.7 MEDIUM Missing Authorization Check in SAP S/4HANA (Linear Asset Management RAP Business Object)
CVE-2026-89106 4.4 MEDIUM Cross Site Scripting (XSS) vulnerability in SAPUI5
CVE-2026-89124 4.3 MEDIUM Missing Authorization Check in SAP Global Trade Services, edition for SAP HANA (Display Pr
CVE-2026-58242 3.5 LOW Improper Authorization check in SAP Cloud Connector

IV. Related Vulnerabilities

Same vendor: SAP_SE
Same weakness: CWE-1188

V. Comments for CVE-2026-89105

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